A chamber, in a hydraulic system, in which air (or some other gas) is compressed to regulate the flow of a fluid.

Any flow of air, especially the motion of air around a moving aircraft or aerofoil.

A layer of trapped air that supports a hovercraft. / A shock absorber that uses an air chamber. / A rubber or plastic inflatable cushion.

A hole in any surface that allows air or other gases to pass, especially an opening in the surface of a frozen lake etc. / An air pocket. / The blowhole of a whale.

(military) A military airport, providing housing and support for aircraft and personnel.

A box containing first aid and medical supplies.

(military) The act of using aircraft to attack an enemy to assist ground military forces.

simple past tense and past participle of aim

Directed towards a target.

simple past tense and past participle of aid