That flies or can fly. / Brief or hurried. / Capable of speed / (nautical, of a sail) Not secured by yards. / (nautical, of a vessel) Capable of foiling.

(intransitive) To travel through the air, another gas, or a vacuum, without being in contact with a grounded surface. / (transitive, intransitive, archaic, poetic) To flee, to escape (from).

(intransitive, baseball) To hit a fly ball; to hit a fly ball that is caught for an out. Compare ground (verb) and line (verb).

(baseball, of the ball) While in the air, without having touched the ground. / (idiomatic) Spontaneously or extemporaneously; done as one goes, or during another activity.

(aviation) An informal gathering of private pilots and their aircraft at a prearranged airfield.

plural of flying

Used other than figuratively or idiomatically: see fly, by. / (idiomatic) To pass or go past quickly, often without much interaction

A surname.

present participle of fly by

Alternative form of flyby