Wordnet 3.0
NOUN (1)
1.
insects having usually a single pair of functional wings (anterior pair) with the posterior pair reduced to small knobbed structures and mouth parts adapted for sucking or lapping or piercing;
[syn: dipterous insect, two-winged insects, dipteran, dipteron]
WordNet (r) 3.0 (2006):
dipterous insect
n 1: insects having usually a single pair of functional wings
(anterior pair) with the posterior pair reduced to small
knobbed structures and mouth parts adapted for sucking or
lapping or piercing [syn: dipterous insect, two-winged
insects, dipteran, dipteron]