- bilabial⇄adj. 1. formed by both lips; articulated by bringing the lips close together, as for English ?w, or completely together, as for English ?p, b, m.
2. bilabiate; having two lips. - bilabial⇄bilabial, adjective, noun.
- bilabial⇄noun (Phonetics.) a sound formed by both lips. ?B, p, m, and ?w are bilabials.