1. (v. t.) 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.

2. (v. t.) 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.

3. (v. i.) To practice an exercise or exercises; to train one's self.

4. (n.) 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.

5. (n.) 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.

6. (n.) Any exercise, physical or mental, enforced with regularity and by constant repetition; as, a severe drill in Latin grammar.

7. (n.) 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.

8. (v. t.) To cause to flow in drills or rills or by trickling; to drain by trickling; as, waters drilled through a sandy stratum.

9. (v. t.) To sow, as seeds, by dribbling them along a furrow or in a row, like a trickling rill of water.

10. (v. t.) To entice; to allure from step; to decoy; -- with on.

11. (v. t.) To cause to slip or waste away by degrees.

12. (v. i.) To trickle.

13. (v. i.) To sow in drills.

14. (n.) A small trickling stream; a rill.

15. (n.) An implement for making holes for sowing seed, and sometimes so formed as to contain seeds and drop them into the hole made.

16. (n.) A light furrow or channel made to put seed into sowing.

17. (n.) A row of seed sown in a furrow.

18. (n.) A large African baboon (Cynocephalus leucophaeus).

19. (n.) Same as Drilling.

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