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

Used other than figuratively or idiomatically: see up, in, the, air.

A device used to help the hard of hearing to hear sounds.

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.

(ultimate frisbee) A throw at a downward angle with an upward attitude causing the disc to descend during the beginning of the flight and then rise.

An equal mixture of nitrous oxide and oxygen, used as a mild analgesic and anaesthetic, particularly during childbirth, for dental procedures, and in emergency medicine.

The capital city of Argentina. / The largest and most populous province in Argentina, part of the Pampas region.

(idiomatic, broadcasting) An unintended interruption in a broadcast during which nothing is transmitted: a silent period on radio or a silent period with no picture on television.

The giving of national funds to subsidize a local or regional project. / Providing funds to an institution (such as a school) or person to subsidize a specific project or activity, such as a scholarship.