to pierce or bore with a drill, or a with a drill; to perforate; as, to drill a hole into a rock; to drill a piece of metal.-to train in the military art; to exercise diligently, as soldiers, in military evolutions and exercises; hence, to instruct thoroughly in the rudiments of any art or branch of knowledge; to discipline.-to practice an exercise or exercises; to train one's self.-an instrument with an edged or pointed end used for making holes in hard substances; strictly, a tool that cuts with its end, by revolving, as in drilling metals, or by a succession of blows, as in drilling stone; also, a drill press.-the act or exercise of training soldiers in the military art, as in the manual of arms, in the execution of evolutions, and the like; hence, diligent and strict instruction and exercise in the rudiments and methods of any business; a kind or method of military exercises; as, infantry drill; battalion drill; artillery drill.-any exercise, physical or mental, enforced with regularity and by constant repetition; as, a severe drill in latin grammar.-a marine gastropod, of several species, which kills oysters and other bivalves by drilling holes through the shell. the most destructive kind is urosalpinx cinerea.-to cause to flow in drills or rills or by trickling; to drain by trickling; as, waters drilled through a sandy stratum.-to sow, as seeds, by dribbling them along a furrow or in a row, like a trickling rill of water.-to entice; to allure from step; to decoy; -- with on.-to cause to slip or waste away by degrees.-to trickle.-to sow in drills.-a small trickling stream; a rill.-an implement for making holes for sowing seed, and sometimes so formed as to contain seeds and drop them into the hole made.-a light furrow or channel made to put seed into sowing.-a row of seed sown in a furrow.-a large african baboon (cynocephalus leucophaeus).-same as drilling.