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

(synonym) two-winged insects , dipteran , dipteron

(hypernym) insect

(hyponym) gall midge , gallfly , gall gnat

(member-holonym) Diptera , order Diptera

(part-meronym) halter , haltere , balancer