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The Collaborative International Dictionary of English v.0.48 (gcide)

Fly \Fly\ (fl[imac]), v. i. [imp. {Flew} (fl[=u]); p. p. {Flown}
(fl[=o]n); p. pr. & vb. n. {Flying}.] [OE. fleen, fleen,
fleyen, flegen, AS. fle['o]gan; akin to D. vliegen, OHG.
fliogan, G. fliegen, Icel. flj[=u]ga, Sw. flyga, Dan. flyve,
Goth. us-flaugjan to cause to fly away, blow about, and perh.
to L. pluma feather, E. plume. [root]84. Cf. {Fledge},
{Flight}, {Flock} of animals.]
1. To move in or pass through the air with wings, as a bird.

2. To move through the air or before the wind; esp., to pass
or be driven rapidly through the air by any impulse.
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3. To float, wave, or rise in the air, as sparks or a flag.
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Man is born unto trouble, as the sparks fly upward.
--Job v. 7.
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4. To move or pass swiftly; to hasten away; to circulate
rapidly; as, a ship flies on the deep; a top flies around;
rumor flies.
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Fly, envious Time, till thou run out thy race.
--Milton.
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The dark waves murmured as the ships flew on.
--Bryant.
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5. To run from danger; to attempt to escape; to flee; as, an
enemy or a coward flies. See Note under {Flee}.
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Fly, ere evil intercept thy flight. --Milton.
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Whither shall I fly to escape their hands ? --Shak.
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6. To move suddenly, or with violence; to do an act suddenly
or swiftly; -- usually with a qualifying word; as, a door
flies open; a bomb flies apart.
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{To fly about} (Naut.), to change frequently in a short time;
-- said of the wind.

{To fly around}, to move about in haste. [Colloq.]

{To fly at}, to spring toward; to rush on; to attack
suddenly.

{To fly in the face of}, to insult; to assail; to set at
defiance; to oppose with violence; to act in direct
opposition to; to resist.

{To fly off}, to separate, or become detached suddenly; to
revolt.

{To fly on}, to attack.

{To fly open}, to open suddenly, or with violence.

{To fly out}.
(a) To rush out.
(b) To burst into a passion; to break out into license.

{To let fly}.
(a) To throw or drive with violence; to discharge. "A man
lets fly his arrow without taking any aim." --Addison.
(b) (Naut.) To let go suddenly and entirely; as, to let
fly the sheets.
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Fly \Fly\, v. t.
1. To cause to fly or to float in the air, as a bird, a kite,
a flag, etc.
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The brave black flag I fly. --W. S.
Gilbert.
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2. To fly or flee from; to shun; to avoid.
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Sleep flies the wretch. --Dryden.
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To fly the favors of so good a king. --Shak.
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3. To hunt with a hawk. [Obs.] --Bacon.
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4. To manage (an aircraft) in flight; as, to fly an
a["e]roplane.
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{To fly a kite} (Com.), to raise money on commercial notes.
[Cant or Slang]
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Fly \Fly\, n.; pl. {Flies} (fl[imac]z). [OE. flie, flege, AS.
fl[=y]ge, fle['o]ge, fr. fle['o]gan to fly; akin to D. vlieg,
OHG. flioga, G. fliege, Icel. & Sw. fluga, Dan. flue. [root]
84. See {Fly}, v. i.]
1. (Zool.)
(a) Any winged insect; esp., one with transparent wings;
as, the Spanish fly; firefly; gall fly; dragon fly.
(b) Any dipterous insect; as, the house fly; flesh fly;
black fly. See {Diptera}, and Illust. in Append.
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2. A hook dressed in imitation of a fly, -- used for fishing.
"The fur-wrought fly." --Gay.
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3. A familiar spirit; a witch's attendant. [Obs.]
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A trifling fly, none of your great familiars. --B.
Jonson.
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4. A parasite. [Obs.] --Massinger.
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5. A kind of light carriage for rapid transit, plying for
hire and usually drawn by one horse. [Eng.]
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6. The length of an extended flag from its staff; sometimes,
the length from the "union" to the extreme end.
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7. The part of a vane pointing the direction from which the
wind blows.
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8. (Naut.) That part of a compass on which the points are
marked; the compass card. --Totten.
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9. (Mech.)
(a) Two or more vanes set on a revolving axis, to act as a
fanner, or to equalize or impede the motion of
machinery by the resistance of the air, as in the
striking part of a clock.
(b) A heavy wheel, or cross arms with weights at the ends
on a revolving axis, to regulate or equalize the
motion of machinery by means of its inertia, where the
power communicated, or the resistance to be overcome,
is variable, as in the steam engine or the coining
press. See {Fly wheel} (below).
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10. (Knitting Machine) The piece hinged to the needle, which
holds the engaged loop in position while the needle is
penetrating another loop; a latch. --Knight.
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11. The pair of arms revolving around the bobbin, in a
spinning wheel or spinning frame, to twist the yarn.
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12. (Weaving) A shuttle driven through the shed by a blow or
jerk. --Knight.
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13.
(a) Formerly, the person who took the printed sheets from
the press.
(b) A vibrating frame with fingers, attached to a power
to a power printing press for doing the same work.
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14. The outer canvas of a tent with double top, usually drawn
over the ridgepole, but so extended as to touch the roof
of the tent at no other place.
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15. One of the upper screens of a stage in a theater.
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16. The fore flap of a bootee; also, a lap on trousers,
overcoats, etc., to conceal a row of buttons.
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17. (Baseball) A batted ball that flies to a considerable
distance, usually high in the air; also, the flight of a
ball so struck; as, it was caught on the fly. Also called
{fly ball}. "a fly deep into right field"
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18. (Cotton Manuf.) Waste cotton.
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{Black fly}, {Cheese fly}, {Dragon fly, etc.} See under
{Black}, {Cheese}, etc. -- {Fly agaric} (Bot.), a mushroom
({Agaricus muscarius}), having a narcotic juice which, in
sufficient quantities, is poisonous. -- {Fly block}
(Naut.), a pulley whose position shifts to suit the
working of the tackle with which it is connected; -- used
in the hoisting tackle of yards. -- {Fly board} (Printing
Press), the board on which printed sheets are deposited by
the fly. -- {Fly book}, a case in the form of a book for
anglers' flies. --Kingsley.{Fly cap}, a cap with wings,
formerly worn by women. -- {Fly drill}, a drill having a
reciprocating motion controlled by a fly wheel, the
driving power being applied by the hand through a cord
winding in reverse directions upon the spindle as it
rotates backward and forward. --Knight.{Fly fishing}, the
act or art of angling with a bait of natural or artificial
flies; fishing using a fly[2] as bait. --Walton. -- --
{Fly fisherman}, one who fishes using natural or artificial
flies[2] as bait, especially one who fishes exclusively in
that manner. -- {Fly flap}, an implement for killing
flies. -- {Fly governor}, a governor for regulating the
speed of an engine, etc., by the resistance of vanes
revolving in the air. -- {Fly honeysuckle} (Bot.), a plant
of the honeysuckle genus ({Lonicera}), having a bushy stem
and the flowers in pairs, as {L. ciliata} and {L.
Xylosteum}. -- {Fly hook}, a fishhook supplied with an
artificial fly. -- {Fly leaf}, an unprinted leaf at the
beginning or end of a book, circular, programme, etc. --
{Fly maggot}, a maggot bred from the egg of a fly. --Ray.

{Fly net}, a screen to exclude insects.

{Fly nut} (Mach.), a nut with wings; a thumb nut; a finger
nut.

{Fly orchis} (Bot.), a plant ({Ophrys muscifera}), whose
flowers resemble flies.

{Fly paper}, poisoned or sticky paper for killing flies that
feed upon or are entangled by it.

{Fly powder}, an arsenical powder used to poison flies.

{Fly press}, a screw press for punching, embossing, etc.,
operated by hand and having a heavy fly.

{Fly rail}, a bracket which turns out to support the hinged
leaf of a table.

{Fly rod}, a light fishing rod used in angling with a fly.

{Fly sheet}, a small loose advertising sheet; a handbill.

{Fly snapper} (Zool.), an American bird ({Phainopepla
nitens}), allied to the chatterers and shrikes. The male
is glossy blue-black; the female brownish gray.

{Fly wheel} (Mach.), a heavy wheel attached to machinery to
equalize the movement (opposing any sudden acceleration by
its inertia and any retardation by its momentum), and to
accumulate or give out energy for a variable or
intermitting resistance. See {Fly}, n., 9.

{On the fly} (Baseball), still in the air; -- said of a
batted ball caught before touching the ground..
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Fly \Fly\, a.
Knowing; wide awake; fully understanding another's meaning.
[Slang] --Dickens.
[1913 Webster] Fly amanita