Synonyms for upper lip include the following: vermillion border, labium superius, and superior labial furrow. The vermillion border refers to the edge of the upper lip where it meets the skin of the face, while labium superius is the Latin term for the upper lip. Superior labial furrow refers to the groove that runs horizontally across the upper lip. Other synonyms for upper lip include upper vermilion and upper lip ridge. These terms are commonly used by dermatologists, plastic surgeons, and beauticians to describe the various features of the upper lip, as it is a prominent feature of the face that can greatly affect one's overall appearance.