(anatomy) A facial muscle arising from the lower margin of the orbit and inserting into the muscular substance of the upper lip which it elevates.

plural of levator labii superioris

(anatomy) A muscle of the face that arises from the nasal process of the maxilla, that passes downward and laterally, that divides into a part inserting into the alar cartilage and one inserting into the upper lip and that dilates the nostril and elevates the upper lip.

(rare) plural of levator labii superioris alaeque nasi

(zoology) Any earwig in the family Labiidae.

plural of labiid