n, pl  la*bia   1  :  any of the folds at the margin of the vulva - compare LABIA MAJORA LABIA MINORA   2  :  a lower mouthpart of an insect that is formed by the second pair of maxillae united in the midline .
 
 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2018.