[1] : The Collaborative International Dictionary of English v.0.48

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.
      1913 webster

   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.
      1913 webster

            he frederic the great drilled his people, as he
            drilled his grenadiers.               -- macaulay.
      1913 webster
see also:
drilled drilling thrill 

[2] : The Collaborative International Dictionary of English v.0.48

drilling \drill"ing\, n.
   1. the act of piercing with a drill.
      1913 webster

   2. a training by repeated exercises.
      1913 webster

[3] : The Collaborative International Dictionary of English v.0.48

drilling \drill"ing\, n.
   the act of using a drill in sowing seeds.
   1913 webster

[4] : The Collaborative International Dictionary of English v.0.48

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.
   1913 webster
see also:
three twill 

[5] : WordNet (r) 2.0

drilling
     n 1: the act of drilling syn: boring
     2: the act of drilling a hole in the earth in the hope of
        producing petroleum syn: boring, oil production
see also:
boring oil production 

Drilling >> D Words
Drilling, definition of term: Drilling
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