bisulcoust (bisulkus)

[L. bisulcus, two furrowed, IMG:content-2109.png:[blocks in formation] bit 2t. The action of biting food; eating; grazing.3t. The biting, cutting, or penetrating action of an edged weapon or tool.-4. The biting, catching, holding, cutting, or boring part of a tool. Specifically-(a) The cutting blade of an ax, hatchet, plane, drill, etc. (b) pl. The blades of the cutter-head of a molding-machine. (c) pl. The jaws of a pair of tongs. (d) The part of a key which enters the lock and acts on the bolts and tumblers. 5. A boring-tool used in a carpenter's brace. Bits are of various kinds, and are applied in a variety of ways. The similar tool used for metal, and applied by the drill-bow, ratchet, brace, lathe, or drilling-machine, is termed a drill, or drill - bit. See auger, borer, drill, center. bit, gouge - bit, quill - bit, rose-bit, shell-bit, spoon-bit, and phrases below. 6. The metal part of a bridle which is inserted in the mouth of a horse, with the appendages (rings, etc.) to which the reins are fastened. Those that tame wild horses Stop their mouths with stubborn bits , and spur them Till they obey the manage. Shak., Hen. VIII., v. 2. 7. The joint of an umbrella.-8. A hammer used by masons for dre ing granite and for rough