双唇音

bilabial \bi*la"bi*al\ adj. (Linguistics)
produced using both lips; -- said of a consonant. As,
bilabial fricatives. See {labial}, adj. and {bilabial, n.
[PJC]


bilabial \bi*la"bi*al\ n. (Linguistics)
a consonant that is articulated using both lips, as p or b or
w.
[WordNet 1.5]