| drill 1 (def. 5). |
[dril] 
| 1. | Machinery, Building Trades.
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| 2. | Military.
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| 3. | any strict, methodical, repetitive, or mechanical training, instruction, or exercise: a spelling drill. |
| 4. | the correct or customary manner of proceeding. |
| 5. | Also called snail bore. a gastropod, Urosalpinx cinera, that bores holes in shellfish, as oysters. |
| 6. | to pierce or bore a hole in (something). |
| 7. | to make (a hole) by boring. |
| 8. | Military. to instruct and exercise in formation marching and movement, in the carrying of arms during formal marching, and in the formal handling of arms for ceremonies and guard work. |
| 9. | to impart (knowledge) by strict training, discipline, or repetition. |
| 10. | to pierce or bore something with or as with a drill. |
| 11. | to go through exercise in military or other training. |
| snail bore n. A gastropod mollusk (Urosalpinx cinerea) that injures oysters by boring into their shells. |