(countable, aviation) An act of flight.

(uncountable, aerodynamics) The action or process of sustained motion through the air.

(uncountable, nautical) The action of sustained hydrodynamic lift on hydrofoils lifting the vessel hull lifted out of the water, for sustained motion across water.

present participle and gerund of fly

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.

Designating a cattle brand consisting of a letter extended on both sides with tilde-like curved lines.