noun
1. a small parachute or articulated flap to reduce the speed of an aircraft
• Syn: ↑dive brake
• Hypernyms: ↑restraint, ↑constraint
2. a vehicular brake that operates by compressed air; especially for heavy vehicles
• Hypernyms: ↑power brake
• Part Holonyms: ↑motor vehicle, ↑automotive vehicle
Useful english dictionary. 2012.