labia mi·no·ra 
(mə-nôrə)
(mə-nôrə)pl.n.
The two thin inner folds of skin within the vestibule of the vagina enclosed within the cleft of the labia majora; nymphae.
[New Latin labia minōra : Latin labia, pl. of labium, lip + Latin minōra, neuter pl. of minor, smaller.]