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Drill jig
(gcide) | 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
whirligig.]
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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. &
Fl.
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5. A trolling bait, consisting of a bright spoon and a hook
attached.
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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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Drill jig
(gcide) | 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
press.
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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
grammar.
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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
cinerea}.
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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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