Pronunciation: (lā'bē-um), [key]
—pl. -bi•aPronunciation: (-bē-u). [key]
1. a lip or liplike part.
a. a lip or lip-shaped structure or part.
b. any of the folds of skin bordering the vulva.
3. Bot.the lower lip of a bilabiate corolla.
4. Entomol.the posterior, unpaired member of the mouthparts of an insect, formed by the united second maxillae.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.