| slovo | definícia |
Bow drill
(gcide) | 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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Bow drill
(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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