WordNet (r) 3.0 (2006):

fuel-air explosive
    n 1: a device consisting of a container of fuel and two
         explosive charges; the first charge bursts open the fuel
         container at a predetermined height and spreads the fuel in
         a cloud that mixes with atmospheric oxygen; the second
         charge detonates the cloud which creates an enormous blast
         wave and incinerates whatever is below [syn: fuel-air
         explosive, FAE]