The 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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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
      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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