Pronunciation: (lā'bē-ul), [key]
1. of, pertaining to, or resembling a labium.
2. of or pertaining to the lips.
3. Phonet.involving lip articulation, as p, v, m, w, or a rounded vowel.
4. Music.having the tones produced by the impact of a stream of air on a sharp liplike edge, as in a flute or the flue pipes of an organ.
1. any labial consonant, esp. a bilabial.
2. any labial sound.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.