Words related to lip
in anatomy and zoology, "lips or lip-like parts," a Modern Latin use of Latin labia "lips," plural of labium "lip" (see lip (n.)). Specifically as "the folds on either side of the vulva" (labia pudendi) from 1630s; further classified as labia majora (the outer folds, 1813; the singular is labium majus) and labia minora (inner folds, 1781; the singular is labium minus). The lips of the mouth are labium superior (upper) and labium inferiore (lower).
"pertaining to the lips," 1590s, from Medieval Latin labialis "having to do with the lips," from Latin labium "lip" (see lip (n.)). The noun meaning "a labial sound" (one accomplished by complete closure of the lips) is from 1660s, from the adjective in this sense (1590s). Related: Labially.