Drill \Drill\, v. t. [imp. & p. p. Drilled; p. pr. & vb. n. Drilling.]

[D. drillen to bore, drill (soldiers); probably akin to AS. pyrlian, pyrelian, to pierce. See Thrill.]

1. 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. 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.

He [Frederic the Great] drilled his people, as he drilled his grenadiers. -- Macaulay.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Drilling \Drill"ing\, n.

1. The act of piercing with a drill.

2. A training by repeated exercises.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Drilling \Drill"ing\, n. The act of using a drill in sowing seeds.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Drilling \Drill"ing\, n. [G. drillich, fr. L. trilix having three threads, fr. the of tres three + licium a thread of the warm. See Three, and cf. Twill.]

(Manuf.) A heavy, twilled fabric of linen or cotton.

Source: Webster's Revised Unabridged Dictionary (1913)