To pierce or make a hole in with a drill or a similar tool, or as if with a drill.To make with a drill: as, to drill a hole.3 To wear away or waste slowly.To instruct and exercise in military tactics and the use of arms; hence, to train in anything with the practical thoroughness characteristic of military training.On American railroads, to shift (cars or locomotives) about, or run them back and forth, at a terminus or station, in order to get them into the desired position.6 To draw on; entice; decoy.[⟨ drill, n., 4.] In agri.: To sow in rows, drills, or channels: as, to drill wheat.To sow with seed in drills: as, the field was drilled, not sown broadcast.To go through exercises in military tactics.To sow seed in drills.n. A tool for boring holes in metal, stone, or other hard substance; specifically, a steel cutting-tool fixed to a drill-stock, bow-lathe, or drilling-machine. See cuts under bow-drill, brace-drill, and cramp-drill.n. In mining, a borer: the more common term in the United States.n. In agriculture, a machine for planting seeds, as of grasses, wheat, oats, corn, etc., by dropping them in rows and covering them with earth.n. A row of seeds deposited in the earth.n. The trench or channel in which the seeds are deposited.n. A shell-fish which is destructive to oyster-beds by boring into the shells of young oysters.n. The act of training soldiers in military tactics; hence, in general, the act of teaching by repeated exercises.n. In dentistry, a small iron drill into the end of which is set a small piece of bort.n. A screw-stock drill in which, by means of bevel-pinions, the motion of the screw-stock is transmitted to a drill at right angles to the stock. Also called Archimedean drill, screw-Stock drill.To trill; trickle; flow gently.To drain; draw off in drains or streams: as, water drilled through a boggy soil.n. A sip, as of water.n. A rill.n. A trade-name for drilling: often used in the plural.n. In zoology, a baboon.n. Specifically, Mormon or Cynocephalus leucophæus, a baboon of western Africa, closely related to the mandrill, but smaller, with a black visage, and a stumpy erect tail scarcely two inches long.n. An apparatus used with a boring-tool which cuts on its end and is fed into the hole by a gimlet point, or with a tool such as is ordinarily turned by hand.