Jig n.
 1. Mus. A light, brisk musical movement.
    Hot and hasty, like a Scotch jig.   --Shak.
 3. A light, humorous piece of writing, esp. in rhyme; a farce in verse; a ballad. [Obs.]
 A jig shall be clapped at, and every rhyme
 Praised and applauded.   --Beau. & Fl.
 4. A piece of sport; a trick; a prank. [Obs.]
 Is't not a fine jig,
 A precious cunning, in the late Protector?   --Beau. & Fl.
 5. A trolling bait, consisting of a bright spoon and a hook attached.
 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.
 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.


 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.
 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.
 3. Any exercise, physical or mental, enforced with regularity and by constant repetition; as, a severe drill in Latin grammar.
 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.
 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.