Dictionary

1fly

verb \ˈflī\
flew \ˈflü\ flown \ˈflōn\ fly·ing

Definition of FLY

intransitive verb
1
a :  to move in or pass through the air with wings
b :  to move through the air or before the wind or through outer space
c :  to float, wave, or soar in the air <flags flying at half-mast>
2
a :  to take flight :  flee
b :  to fade and disappear :  vanish
3
a :  to move, pass, or spread quickly <rumors were flying>
b :  to be moved with sudden extreme emotion <flew into a rage>
c :  to seem to pass quickly <the time simply flew>
4
:  to become expended or dissipated rapidly
5
:  to operate or travel in an airplane or spacecraft
6
:  to work successfully :  win popular acceptance <knew … a pure human-rights approach would not fly — Charles Brydon>
transitive verb
1
a :  to cause to fly, float, or hang in the air <flying a kite>
b :  to operate (as a balloon, aircraft, rocket, or spacecraft) in flight
c :  to journey over or through by flying
2
a :  to flee or escape from
b :  avoid, shun
3
:  to transport by aircraft or spacecraft
fly at
:  to assail suddenly and violently
fly blind
:  to fly an airplane solely by instruments
fly high
:  to be elated
fly in the face of or fly in the teeth of
:  to stand or act forthrightly or brazenly in defiance or contradiction of
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Origin of FLY

Middle English flien, from Old English flēogan; akin to Old High German fliogan to fly and probably to Old English flōwan to flow
First Known Use: before 12th century

2fly

noun
plural flies

Definition of FLY

1
:  the action or process of flying :  flight
2
a :  a device consisting of two or more radial vanes capable of rotating on a spindle to act as a fan or to govern the speed of clockwork or very light machinery
b :  flywheel
3
plural :  the space over a theater stage where scenery and equipment can be hung
4
:  something attached by one edge: as
a :  a garment closing concealed by a fold of cloth extending over the fastener
b (1) :  the length of an extended flag from its staff or support
(2) :  the outer or loose end of a flag
5
:  a baseball hit high into the air
6
:  flyleaf
7
:  a sheet of material (as canvas) that is attachable to a tent for use as a double top or as a rooflike extension
8
:  a football pass pattern in which the receiver runs straight downfield
on the fly
1
:  in motion :  busy
2
:  while still in the air :  without the ball bouncing <the home run carried 450 feet on the fly>
3
:  in a hurry and often without preparation :  hastily, spontaneously <making decisions on the fly>
4
:  simultaneously with another task <software that handles formatting on the fly>

First Known Use of FLY

before 12th century

3fly

verb
fliedfly·ing

Definition of FLY

intransitive verb
:  to hit a fly in baseball

First Known Use of FLY

1893

4fly

noun
plural flies

Definition of FLY

1
:  a winged insect —usually used in combination <mayflies> <butterfly>
2
a :  any of a large order (Diptera) of winged or rarely wingless insects (as the housefly, mosquito, or gnat) that have the anterior wings functional, the posterior wings reduced to halteres, and segmented often headless, eyeless, and legless larvae — compare maggot
b :  a large stout-bodied fly
3
:  a fishhook dressed (as with feathers or tinsel) to suggest an insect
fly in the ointment
:  a detracting factor or element

Origin of FLY

Middle English flie, from Old English flēoge; akin to Old High German flioga fly, Old English flēogan to fly
First Known Use: before 12th century

Other Insect Terms

drone, entomology, gadfly, pismire, proboscis, vespine

5fly

adjective

Definition of FLY

chiefly British
:  keen, artful

Origin of FLY

probably from 1fly
First Known Use: 1811

Fly

geographical name \ˈflī\

Definition of FLY

river 650 miles (1046 kilometers) S New Guinea flowing SE into Gulf of Papua
FLY Defined for Kids

1fly

verb \ˈflī\
flew \ˈflü\flown \ˈflōn\fly·ing

Definition of FLY for Kids

1
:  to move in or pass through the air with wings <Birds and airplanes fly.>
2
:  to move through the air or before the wind <Paper was flying in all directions.>
3
:  to float or cause to float, wave, or soar in the wind <fly a kite> <fly a flag>
4
:  to run away :  flee <… calling out to him to fly, for God's sake, by the window … — Charles Dickens, The Cricket on the Hearth>
5
:  to pass or move swiftly <Time flies.> <Cars were flying past us.>
6
:  to operate or travel in an aircraft <fly a jet> <I'm flying home for the holidays.>
7
:  to become suddenly emotional <He flew into a rage.>

2fly

noun
plural flies

Definition of FLY for Kids

1
:  a flap of material to cover a fastening in a garment
2
:  a layer of fabric that goes over the top of a tent
3
:  a baseball hit very high

3fly

noun
plural flies

Definition of FLY for Kids

1
:  any of a large group of mostly stout-bodied two-winged insects (as the housefly)
2
:  a winged insect Hint:This sense of fly is usually used in combination. <dragonfly> <firefly>
3
:  a fishhook made to look like an insect
Medical Dictionary

fly

noun \ˈflī\
plural flies

Medical Definition of FLY

1
:  a winged insect—usually used in combination <emerging mayflies> <a large butterfly>
2
a :  any dipteran fly—called also true fly, two-winged fly b :  a large and stout-bodied dipteran fly (as a horsefly)
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