vertical lips pl (plural only)
- (slang) The labia majora.
2007, Marissa Monteilh, Dr. Feelgood, Dafina Books, published 2011, →ISBN, page 59:I moved her vertical lips aside to allow for easy access.
2008, Robert L. Dark, Ruthless, Lulu.com, →ISBN, page 83:Her moist vertical lips part as she lowers her knee and therefore her pelvis, down around me.
2014, S. K. Collins, Wide Open, Strebor Books, →ISBN, page 16:Chelsea squealed as Shady pressed his tongue against her vertical lips getting a good taste of her clit.