air that has been put under extra pressure so that it has a great deal of force when released. Compressed air is used to operate certain kinds of brakes, drills, guns, sprayers, and atomizers, and to inflate tires.
com|pressed-air «kuhm PREHST AIR», adjective.
utilizing compressed air as a source of power: »

a compressed-air drill, gun, or sprayer.

Useful english dictionary. 2012.