Nouns

(n)flytwo-winged insects characterized by active flight
(n)tent-fly, rainfly, fly sheet, fly, tent flapflap consisting of a piece of canvas that can be drawn back to provide entrance to a tent
(n)fly, fly frontan opening in a garment that is closed by a zipper or by buttons concealed under a fold of cloth
(n)fly, fly ball(baseball) a hit that flies up in the air
(n)flyfisherman's lure consisting of a fishhook decorated to look like an insect

Verbs

(v)fly, wingtravel through the air; be airborne“Man cannot fly”
(v)flymove quickly or suddenly“He flew about the place”
(v)fly, aviate, pilotoperate an airplane“The pilot flew to Cuba”
(v)flytransport by aeroplane“We fly flowers from the Caribbean to North America”
(v)flycause to fly or float“fly a kite”
(v)flybe dispersed or disseminated“Rumors and accusations are flying”
(v)flychange quickly from one emotional state to another“fly into a rage”
(v)fly, fell, vanishpass away rapidly“Time flies like an arrow”, “Time fleeing beneath him”
(v)flytravel in an airplane“she is flying to Cincinnati tonight”, “Are we driving or flying?”
(v)flydisplay in the air or cause to float“fly a kite”, “All nations fly their flags in front of the U.N.”
(v)flee, fly, take flightrun away quickly“He threw down his gun and fled”
(v)flytravel over (an area of land or sea) in an aircraft“Lindbergh was the first to fly the Atlantic”
(v)flyhit a fly
(v)vanish, fly, vaporizedecrease rapidly and disappear“the money vanished in las Vegas”, “all my stock assets have vaporized”

Adjectives

(s)fly(British informal) not to be deceived or hoodwinked