(idiomatic) Not yet resolved, finished, answered, decided or certain.

A branch of the military mainly devoted to air warfare, as opposed to (land) army and navy. / A unit in the U.S. Air Force larger than a division but smaller than a command.

A mattress that is inflated with air, and used as a temporary or permanent bed.

Alternative letter-case form of air commodore (found when the term is used as a title).

Alternative form of airtime / The period of freefall after jumping.

Alternative form of airshaft

(of a missile) fired from an aircraft at a target on land or water

A designated route used by commercial aircraft when flying from one airport to another.

the science and technology of determining the position of an aircraft with respect to the surface of the earth and accurately maintaining a desired course

(of a missile) fired from the ground, or from a ship, at an aircraft in flight, or at an incoming missile