(idiomatic, intransitive) To strike or release a projectile with great force. / (figuratively) To unleash an angry outburst.

plural of no-fly zone

(intransitive, idiomatic) To flee rapidly; to run away.

(archaic) A firefly

(fishing) An alderfly, perhaps specifically of the species Sialis lutaria.

To leave one's parents or childhood guardians and begin an independent life as an adult.

plural of fly ball

Alternative form of March fly

(uncountable) A supposed aphrodisiac extracted from the beetle Lytta vesicatoria; cantharidin, the active ingredient, a vesicant used as a defence by L. vesicatoria and other blister beetles.

One who engages in fly-tipping.