A structure shaped to produce lift when moving in air. / A wing of an aircraft.

An airfield (an area designated for the takeoff and landing of aircraft), including one or more runways and (for commercial airports) one or more passenger terminals.

A warship designed to carry aircraft, serving as a seagoing air base, with a deck on which aircraft can be launched and landed.

(politics, aviation) A specified portion of the atmosphere, especially that under the technical aviation control and/or jurisdiction of a particular state over which territory (and territorial waters) it lies.

insubstantial / impractical

In or carried by the air. / In flight. / Fitted to an aircraft. / Transported by air in an aircraft.

Military infantry intended to be transported by air and delivered to the battlefield by parachute or helicopter.

The system of conveying mail using aircraft. / The items of mail so carried.

(transitive) To send mail by air. / (baseball) To (unintentionally) throw the ball well over a fielder's head where that fielder is unable to make a play on the ball.

A location where aircraft are operated, usually having a runway and maintenance facilities.