A military operation, esp. one carried out by aircraft, in the course of a conflict. Also: an expedition undertaken for scientific or exploratory…

An attack by aircraft, esp. one in which bombs are dropped on to a ground target.

An operational flight by a military aircraft.

An air raid. Obsolete.

U.S. Power in the air. An airborne military attack. Also: military air power; air supremacy.

an attack made using aircraft.

Services' slang (originally R.A.F. slang). Enemy aircraft, esp. in the context of aerial combat.