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.

Broadcasting or transmitting through the medium of radio or television. / Being, or so as to be, broadcast or transmitted by radio or television. / Smoothly; gracefully. / Happily.

The middle of the air, as while in flight.

To assuage a hostile situation.

Alternative spelling of airbag.

(idiomatic) Something relieving, refreshing, or new.

The contamination of the atmosphere by noxious gases and particulates.