WordNet (r) 3.0 (2006):

plosive
    n 1: a consonant produced by stopping the flow of air at some
         point and suddenly releasing it; "his stop consonants are
         too aspirated" [syn: stop consonant, stop, occlusive,
         plosive consonant, plosive speech sound, plosive]
         [ant: continuant, continuant consonant]