bow drill

2 definitions found

bow drill - Collaborative International Dictionary of English v.0.48 :

  Bow \Bow\ (b[=o]), n. [OE. bowe, boge, AS. boga, fr. AS.
     b[=u]gan to bend; akin to D. boog, G. bogen, Icel. bogi. See
     Bow, v. t.]
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     1. Anything bent, or in the form of a curve, as the rainbow.
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              I do set my bow in the cloud.         --Gen. ix. 13.
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     2. A weapon made of a strip of wood, or other elastic
        material, with a cord connecting the two ends, by means of
        which an arrow is propelled.
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     3. An ornamental knot, with projecting loops, formed by
        doubling a ribbon or string.
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     4. The U-shaped piece which embraces the neck of an ox and
        fastens it to the yoke.
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     5. (Mus.) An appliance consisting of an elastic rod, with a
        number of horse hairs stretched from end to end of it,
        used in playing on a stringed instrument.
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     6. An arcograph.
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     7. (Mech. & Manuf.) Any instrument consisting of an elastic
        rod, with ends connected by a string, employed for giving
        reciprocating motion to a drill, or for preparing and
        arranging the hair, fur, etc., used by hatters.
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     8. (Naut.) A rude sort of quadrant formerly used for taking
        the sun's altitude at sea.
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     9. (Saddlery) sing. or pl. Two pieces of wood which form the
        arched forward part of a saddletree.
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     Bow bearer (O. Eng. Law), an under officer of the forest
        who looked after trespassers.
  
     Bow drill, a drill worked by a bow and string.
  
     Bow instrument (Mus.), any stringed instrument from which
        the tones are produced by the bow.
  
     Bow window (Arch.) See Bay window.
  
     To draw a long bow, to lie; to exaggerate. [Colloq.]
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  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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