/lay"bee euhm/ , n. , pl. labia /-bee euh/ .
1. a lip or liplike part.
2. Anat.
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.
[ 1590-1600; lambere to lick, LAP 3 . See LABRUM 1 , LIP ]