drill

1 :  an instrument with an edged or pointed end for making holes in hard substances by revolving or by a succession of blows; also :  a machine for operating such an instrument

2 :  the act or exercise of training soldiers in marching and in executing prescribed movements with a weapon

3a :  a physical or mental exercise aimed at perfecting facility and skill especially by regular practiceb :  a formal exercise by a team of marchersc :  the approved, correct, or usual procedure for accomplishing something :  routine

4a :  a marine snail (Urosalpinx cinerea) destructive to oysters by boring through their shells and feeding on the soft partsb :  any of several mollusks related to the drill

5 :  a drilling sound

:  a western African baboon (Mandrillus leucophaeus synonym Papio leucophaeus) having a black face and brown coat and closely related to the typical mandrills

1a :  a shallow furrow or trench into which seed is sownb :  a row of seed sown in such a furrow

2 :  a planting implement that makes holes or furrows, drops in the seed and sometimes fertilizer, and covers them with earth

1 :  to sow (seeds) by dropping along a shallow furrow

2a :  to sow with seed or set with seedlings inserted in drillsb :  to distribute seed or fertilizer in by means of a drill

:  a durable cotton twilled fabric

1 :  to make holes in with a drill

2 :  to teach by repeating a lesson or exercise again and again

1 :  a tool for making holes in hard substances

2 :  the training of soldiers (as in marching)

3 :  instruction in a subject or physical training that is practiced repeatedly

:  a special machine for making holes or furrows and planting seeds in them

:  to sow seeds with or as if with a special machine

:  to make a hole in with a drill the dentist drilled the tooth for a filling

:  an instrument with an edged or pointed end for making holes in hard substances (as bones or teeth) by revolving