water tube (water tub)

1. A pipe for rainwater.-2. One of a set of tubes which open upon the exterior of various invertebrates, and into which water may enter. They are supposed to have an excretory or a depuratory office analogous to that of kidneys. See water - pore, 1, water - vascular, and compare water - lung.-Water-tube boiler, a form of boiler in which the water circulates through pipes, and the flame water witch 2. In ship - building, a name given to the thick planks at the outside of the deck, worked over the ends of the beams, and fitting against the inside of the top-timbers, to which, as well as to the ends of the beams, they are bolted, thus forming an important binding.. Their inner edge is hollowed out to form a channel for water to run off the deck. In iron ve els the waterway a umes many different forms. See cut under beam, 2 ( g ). The spencers we bent on very carefully,... and, making tackles fast to the clews, bowsed them down to the water - ways . R. H. Dana , Jr., Before the Mast, p. 258. The Waterway , as its name would suggest, is a portion of the hull so situated that, in addition to its other functions, it forms a channel for carrying water to the scuppers on each side of the ship. The arle , Naval Arch., § 209. water-weakt (water-wēk), a . Weak as water; wraps about them. water-tupelo water-tupelo (water-tū"pe-lō), n. A form ( Nys sa sa aq aquatic a ) of the black-gum or pepperidge, very feeble or weak. Ny a sylvatic a, having the base of the trunk greatly enlarged or swollen, found in ponds and swamps in the southern United States. water-turkey (wa'ter-ter"ki), n. 1. The anhinga or snake-bird, Plotus anhinga. See dar ter, 3 (b) (1), and cut under anhinga. [Southern U. S.]-2. The wood-ibis, Tantalus locula tor: more fully called Colorado water - turkey. See wood - ibis, and cut under Tantalus. [Southwestern U. S.] water-twist (wa'ter-twist), n. The trade-name for cotton yarn spun on a water-frame. See water - frame. water-twyer (water-twi"ėr), n. In metal., a furnace blast-pipe or twyer kept cool (to prevent the burning of the nozle) by means of a stream of water constantly pa ing through a pipe carried around or beside it. water-vacuole (water-vak"ū-ōl), n. One of the temporary vacuoles of many protozoans, consisting of a globule of water taken in with If merrie now, anone with woe I weepe, If lustie now, forthwith am water -weak. Davies, Muse's Sacrifice, p. 10. (Davies.) water-weed (water-wed), n. 1. Any wild aquatic plant without special use or beauty. The willful water - weeds held me thrall. S. Lanier , The Century, XXVII. 819. 2. Specifically, the choke-pondweed or water thyme, Elodea Can a dens is ( Anacharis (Anacharis Alsinas trum ), of the Hydro char ideæ. See pondweed and Babington's -curse.