drill jig

From The Collaborative International Dictionary of English v.0.48:

Jig \Jig\, n. [OF. gigue a stringed instrument, a kind of dance,
   F. gigue dance, tune, gig; of German origin; cf. MHG.
   g[imac]ge fiddle, G. geige. Cf. Gig a fiddle, Gig a
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   1. (Mus.) A light, brisk musical movement.
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            Hot and hasty, like a Scotch jig.     --Shak.
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   3. A light, humorous piece of writing, esp. in rhyme; a farce
      in verse; a ballad. [Obs.]
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            A jig shall be clapped at, and every rhyme
            Praised and applauded.                --Beau. & Fl.
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   4. A piece of sport; a trick; a prank. [Obs.]
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            Is't not a fine jig,
            A precious cunning, in the late Protector? --Beau. &
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   5. A trolling bait, consisting of a bright spoon and a hook
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   6. (Mach.)
      (a) A small machine or handy tool; esp.: (Metal Working) A
          contrivance fastened to or inclosing a piece of work,
          and having hard steel surfaces to guide a tool, as a
          drill, or to form a shield or template to work to, as
          in filing.
      (b) (Mining) An apparatus or a machine for jigging ore.
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   Drill jig, a jig for guiding a drill. See Jig, 6
      (a) .

   Jig drilling, Jig filing (Metal Working), a process of
      drilling or filing in which the action of the tool is
      directed or limited by a jig.

   Jig saw, a sawing machine with a narrow, vertically
      reciprocating saw, used to cut curved and irregular lines,
      or ornamental patterns in openwork, a scroll saw; --
      called also gig saw.
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From The Collaborative International Dictionary of English v.0.48:

Drill \Drill\, n.
   1. 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
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   2. (Mil.) 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.
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   3. Any exercise, physical or mental, enforced with regularity
      and by constant repetition; as, a severe drill in Latin
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   4. (Zool.) A marine gastropod, of several species, which
      kills oysters and other bivalves by drilling holes through
      the shell. The most destructive kind is {Urosalpinx
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   Bow drill, Breast drill. See under Bow, Breast.

   Cotter drill, or Traverse drill, a machine tool for
      drilling slots.

   Diamond drill. See under Diamond.

   Drill jig. See under Jig.

   Drill pin, the pin in a lock which enters the hollow stem
      of the key.

   Drill sergeant (Mil.), a noncommissioned officer whose
      office it is to instruct soldiers as to their duties, and
      to train them to military exercises and evolutions.

   Vertical drill, a drill press.
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