(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.

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 rifle that propels a pellet or other projectile by using compressed gas, rather than an explosion of gunpowder or other means.

(US, law enforcement) An armed, undercover guard on a commercial-airline flight.

Taking place outdoors; alfresco

(basketball) A thrown ball that misses the basket, and completely fails to touch the net or supporting hoop. / (by extension) Any ball-like object that widely misses its intended target when thrown.

plural of air sport