n. 1. 1 a small parachute or articulated flap to reduce the speed of an aircraft. Syn. -- dive brake [ WordNet 1.5 ]
2. a vehicular brake that operates by compressed air; especially for heavy vehicles. Same as air brake. Syn. -- air brake [ WordNet 1.5 ]
n. 1. an atomizer to spray by means of compressed air. [ WordNet 1.5 ]