rock lobster (roklob"ster)

See lobster, 2, and cut under Palinurus. rocklow (rok'lō), n. Same as roquelaure. rock-lychnis (rok'lik"nis), n. Any one of cer. tain species of Lychnis, once considered to form a genus Viscaria. IMG:content-2406.jpg:[graphic] rock-manikin (rok'man"i-kin), n. A manikin of the genus Rupicola ; a rock-bird or cock of the rock. See cut under Rupicola . rock-maple (rok'mā"pl), n. See maple1 . rock-meal (rok'mēl), n. In mineral . , a white, cotton-like variety of calcite occurring as an efflorescence, as at the quarries of Nanterre, near Paris. rock-milk (rok'milk), n. [Tr. G. bergmilch .] A name given to a cryptocrystalline mixture of aragonite, with calcite in a condition resem- bling chalk, and some organic matter. rock-salt (rok'sâlt), n. Salt existing in nature in the solid form, as dis- tinguished from salt in solution, either in sea- water or in salt springs or lakes. Rock-salt made into prisms and lenses is in- valuable in the study of the distribution of heat in the spectrum of the sun or other spectra, and in similar in- vestigations, since it is very highly diathermanous even to the rays of long wave-length, which are largely absorbed by gla . See salt1 . skôr pi-on), n. A name given to natives of Gib- raltar. [Slang.] rock-seal (rok'sēl), п. The common harbor- seal, Phoca vitulina , as commonly seen basking on tide-rocks. See cut Rock-rose (Helianthemum vulgare ). a , longitudinal section of the flower, petals and sepals re- moved; b , calyx; c, fruit. under Phoca . rock-serpent (rok'sėr"pent), n. 1. A rock- snake. 2. A venomous serpent of the genus Bungarus , family Elapidæ (or Najidæ ), native of India, and closely allied to the cobra, though the neck is not so dilatable. See Bungarus . rock-shaft (rok's haft), n. In steam-engines, a shaft that oscillates or rocks on its journals instead of revolving; specifically, a vibrating shaft with levers which works the slide-valves of some engines. This mode was generally adopted before the introduction of the direct-action mode of work- ing them. Also rocker - shaft , rocking - shaft . rock-parrakeet (rok'par"a-kēt), n. One of the Australian gra -parrakeets, Euphema petro- The common rock-shell is P. lapillus . Some IMG:content-2407.png:[blocks in formation] writers loosely extend the name to various re- lated shells. See cut under Purpura . rock-shrike (rok's hrik), n. Same as rock - thrush . Latham , 1781. rock-slater (rok'slā"tėr), n. A slater or wood- louse of the genus Ligia , found on rocky coasts. rock-snake (rok'snāk), n . A snake that fre- quents rocks or rocky places; a rock-serpent; specifically, a very large snake of the family Pythonidæ; a python or anaconda, as Python molurus , or an Australian member of the genus Morelia . The true pythons are confined to the warmer parts of Old World; but the term rock - snake has often been extended, as anaconda had been transferred, to the great boas of America, belonging to the family Boidæ . See Morelia , and cuts under Python and Pythonidæ . rock-snipe (rok'snīp), n . The purple sandpi- per, Tringa ( Arquatella ) maritima , which haunts rocky shores; the rock-bird or rock-plover: a gunners' name in New England. rock-soap (rok'sōp), n. A mineral of a pitch- black or bluish-black color, having a somewhat greasy feel and adhering strongly to the tongue, used for crayons and for washing cloth. It is a hydrated silicate of aluminium containing some iron, and is properly a variety of halloysite. rock-sparrow (rok's par"ō), n. A finch of the genus Petronia . There are 6 species, ranging through the greater part of Europe, Asia, and Africa. The best- known is P. stulta (originally Fringilla petronia of Lin- næus), known to the early English ornithologists also as rock-trout (rok'trout), n. American brook-trout, Salve lin us fontinalis , as occurring in Lake Superior.-2. A chiroid fish of the genus Hexagram mus ; especially, the boregat or bodieron, H. decagram mus , abundant on the North Pacific coast of North America, about 18 inches long. Also called sea - trout and starling. See cut under Hexagram mus . rock-turquoise (rok'ter-koiz'), n. quoise . row, the last designation giving rise to the technical term stulta , bestowed by Gmelin in 1788. This sparrow occurs from central Europe to China and cis-Saharic Africa. rock-staff (rok'ståf), n. bellows, or other vibrating bar in a machine. rock-starling (rok'stär" ling), n. ouzel. [Local, Scotland.] rock-sturgeon (rok'stėr"jon), n. Same as lake- sturgeon . [Local, U. S.] rock-sucker (rok's uk"ėr), n. A lamprey. See Petromyzon . rock-swallow (rok's wol"ō), n. A swallow which affixes its nest to rocks: not specific. Lark and chat and rock - swallow leaped to wing. rock-swift (rok's wift), n . A bird of the family Cypselidæ and genus Panyptila , as P. saxatilis (or melanoleuca ), the white-throated rock-swift of western North America. It abounds in some places in the Rocky and other mountains, frequenting the most inacce ible cliffs and precipices, where it nests, and usually flies at a great height and with amazing celerity, It is blackish, mostly white underneath, with tips of the secondaries, and is from 6 to 7 inches long and 14 inches in extent of wings. See cut under Panyptila . rockyl (rok'i), a. [ rock1 + -y1.] 1. Full of rocks; abounding in rocks: as, a rocky moun- tain. Listening to the doubling roar, Surging on the rocky shore. rockwork which figures in the style), roc he (ML. roc a ), a rock: see rock1 .] A variety of ornament originating in the Louis-Quatorze style and continuing with constantly increas- ing inorganic exaggeration and extravagance throughout the artistic degeneracy of the Louis- Quinze. It is generally a meaningle , though often a very rich, a emblage of fantastic scrolls and crimped con- ventional shell-work, wrought into irregular and inde- scribable forms, without individuality and without ex- pre ion apart from its usually costly material and sur- roundings. The style has a certain interest from its use in a great number of sumptuous European residences, and from its intimate a ociation with a social life of great outward refinement and splendor. Much of the painting, engraving, porcelain-work, etc., of the time has, too, a real decorative charm, though not of a very high order in art. Hence rococo is used attributively in contempt to note anything feebly pretentious and tastele in art or liter a- ture. Compare baroque . The jumble called rococo is, in general, detestable. A parrot seems to have invented the word; and the thing is worthy of his tawdrine and his incoherence. Rococo embroidery, ornamental needlework and other fancy work of different sorts, the application of the term varying at different times. Especially-(a) A kind of China- ribbon embroidery. (b) A kind of Roman work. rocou (rō'kö), n. [F. rocou , roucou , arnotto; of Braz. origin.] Same as arnotto , 2. of which they are composed, as bamboo rod , etc., they are commonly identified with the name of the fish for which they are specially designed: as, salmon - rod , trout - rod , ba - rod , etc. All rods are, however, divisible into three cla es, according to their make and purpose. These are (1) the fly - rod , which is long, slender, tapering, tough, and highly elastic; (2) the trolling - rod , which is comparatively short, stout, and stiff; and (3) the bait - rod , which a mean be- tween the other two. Fly-rods are most used, with artifi- cial flies. Split-bamboo rods are now manufactured for all kinds of angling. See fly - rod , and cut under reel. (f) An instrument for measuring. 2. In mech., any bar slender in proportion to its length, particularly such a bar used as a brace or a tie between parts for connecting them, or for strengthening a connection be- tween them. The term is used in a very indefinite manner, depending entirely upon individual judgment or caprice. What some would call a rod would by others be called a bar. The rod in the shaft, known as the main rod or spear rod, is usually made of strong balks of timber butted to- gether and connected by strapping plates fastened by bolts. Encyc. Brit ., XVI. 458. 3. Specifically, in a steam-engine, the pitman which connects the cro -head with the crank: also and more generally called connecting -rod. The connection is made at the cro -head to the cro -head pin, and at the crank to the crank-wrist. See cut under steam - engine.- 4. A measure of length equal to 54 yards, or 16+ feet. (Also called pole and perch .) A square rod is the usual measure of brickwork, and is equal to 2724 square feet.-5. A shoot or branch of rocta (rok'ta), n. [ML.: see rote3.] A medie- val musical instrument, much used by the min- strels and troubadours of the thirteenth cen- tury. It was somewhat like the modern violin. O. Shipley. rod1 (rod), n. vowel; orig. with long vowel, rod , rõde , > E. rood), rod , a rod, pole, also a measure of land, a cro , the (holy) rood, a crucifix, = OS. rod a , ruoda , a cro , = OFries. rõde , a gal- lows, = D. roede , a rod, measuring-pole, perch, = MLG. rõde, rude , LG. rode, roode = OHG. ruota, MHG. ruote , G. rut he , rute , a rod, pole, a rod of land, = Icel. rotha , a rood, crucifix 3. Resembling a rock; hence, hard; stony; obdurate; insusceptible of impre ion; hard as a rock: as, a rocky bosom. A rocky heart, killing with cruelty. Mas singer , Virgin-Martyr, ii. 3. rocky2 (rok'i), a . [ rock2 + -y1.] Disposed to rock or reel; hence, giddy; tipsy; dizzy. [Slang, prov. Eng. and U. S.] Rocky Mountain pika. Lagomys princeps , the little chief hare. Rocky Mountain rat. The pack-rat. See Neotoma and rat1 . Rocky Mountain sheep. See sheep , and cut under bighorn . staff, radius , staff, spoke, ray (see radius , ray1), Skt. V rudh , Zend rud , grow. Doublet of rood.] 1. A shoot or slender stem of any woody plant, more especially when cut off and stripped of leaves or twigs; a wand; a straight slender stick; a cane; also, anything of similar form: as, a bra rod . Ye relyques yt Titus caryed to Rome-that is to say, the .x. commaundemente, Aarons rodde , Moyses rod , a ve ell of gold full of manna. Sir R. Guylforde , Pylgrymage, p. 45. Wi' walk in' rod intill his hand, He walked the castle roun'. Heir of Linne (Child's Ballads, VIII. 74). There shall come forth a rod out of the stem of Je e, and a Branch shall grow out of his roots. Isa. xi. 1. Specifically- (a) An instrument of punishment or cor- rection; a single switch or stick, or a bundle of switches; hence, chastisement. M. Peter, as one somewhat seuere of nature, said plain- lie that the Rodde onelie was the sworde that must keepe the Schole in obedience. Ascham , The Scholemaster, p. 18. Thrice was I beaten with rods . A light to guide, a rod To check the erring, and reprove. IMG:content-2408.png:[blocks in formation] (d) An enchanter's wand, or a wand po e ing the power Ye should have snatch'd his wand, And bound him fast; without his rod reversed, And backward mutters of di evering power, (e) A long, light, tapering, elastic pole used in angling, to which the line is attached, now usually made in adjustable sections or joints, and fitted with guides and a reel. There are eight woods commonly used for rods, of which four are solid (greenheart, hickory, ash, and willow) and four are hollow (East Indian bamboo, Carolina and West In- dian cane, white cane, and jungle-cane). Rods have also been made of hard rubber and of steel. Jointed rods are made in three or four pieces, of which the largest and heaviest is the butt, and the slenderest is the tip. The joints are fitted with metal rings or ferrules, and with small rings called guides to receive the line. The reel is stepped into the butt, near its end, or otherwise suitably attached, as by a reel-plate. The special makes of rods are very numerous, and their names almost equally so. Be- sides being named and cla ed according to the material Remember thy congregation, which thou hast pur- chased of old; the rod of thine inheritance, which thou hast redeemed. Ps. lxxiv. 2. 6. In an at., one of numerous slender rod-like or bacillary structures which collectively form, together with similar but conical bodies called cones, one of the layers of which the retina of the eye is composed, called the layer of rods and cones , e ential to the function of vision. See cut under retina.-7. In entom ., specifical- ly, any differentiation of the anterior end of a retinal cell of the eye, which may unite to form a rhabdom. See rhabdomere . - Bait-rod, a fishing- rod used with natural bait.-Binding-rod, a tie-rod.- Boning-rod. See boning . - Cortian rods. Same as rods of Corti . - Crystalline rods. See crystalline.-Divining rod. See divining -rod. Lengthening rod, an exten- sion-rod fitted with screws at the ends and used as a long shank for an auger or a drill in deep boring, as for a tube- well. - Meckelian rod, in embryol ., the cartilaginous basis of the mandibular or first postoral visceral arch. of the embryo of most vertebrates, about the greater distal section of which the o ification of the lower jaw- bone takes place, the proximal end being converted into the malleus of a mammal, the quadrate bone of a bird or reptile, or the corresponding bones of lower verte- brates. See cut under pal a to quadrate . Also called Meck- el's cartilage. Napier's rods (or bones), a contrivance, commonly attributed to John Napier (1550-1617), but in fact described in the Arithmetic of Oronce Finée (1532), for facilitating large calculations in multiplication or di- vision for those who do not perfectly know the multipli- cation table. It consists of a number of rods made of bone, ivory, horn, wood, pasteboard, or other convenient ma- terial, the face of each of which is divided into nine equal parts in the form of little squares, and each part, with the ex- ception of the top compartment, sub- divided by a dex- ter diagonal line into two triangles. These nine little contain the succe ive multiples of the number in the 4 5 6 IMG:content-2409.jpg:[ocr errors] IMG:content-2410.jpg:[blocks in formation] IMG:content-2411.jpg:[graphic] IMG:content-2412.png:[blocks in formation] rod of driving-wheels, a rod connecting the crank-pins of all the driving-wheels on one side of the engine, so that when one is moved by the piston-rod all will be moved equally. Also called coupling - rod. Pedal rod. See pedal. Perforating rods of Sharpey. Same as Sharpey's fibers (which see, under fiber ). - Rod-and-cone layer of the retina. See retina. - Rod license. See license. Rods of Corti, the pillars of the arches of the organ of Corti. The external rods which form the outer pillars are shorter and le numerous than the inner rods. They consist of a cylindrical striated body with an expanded base; the upper extremity is curved, and has somewhat the shape of the head of a bird; the back part fits into a cavity between the heads of two or more inner rods; while the bill-like proce projects toward the reticular membrane. The inner rods have a striated body and an expanded base; the heads have a concavity which receives the outer rods, and a proce entering into the composition of the membrana reticular is. The arches thus formed support the outer and inner hair-cells. Also called pillars of Corti. - Setting-out rod, a guide or gage used in making window-frames, doors, etc.Split rod. (a) One of the rods into which plates of wrought-iron are cut by means of slitting rollers, to be afterward made into nails. ( b ) A fishing-rod made in sections of split bamboo strips. To have a rod in pickle for one. See pickle 2. To ki the rod. See ki . rod1 (rod), v. t.; pret. and pp. rodded, ppr. rod ding. [ Several other houses in the town were rodded in the same way. Sci . Amer ., N. S., LVIII. 358. 2. To operate upon with a rod, in any way. In most of the systems the cable is inserted by a proce technically called rodding- that is, pushing rods through the duct from one manhole to the next. Elect. Rev. (Amer.), XVI. i. 14.