overlip means the upper lip. Lexicurio rates it Sui generis — a strength score of 91 out of 100.
Etymology
From Middle English overlippe, equivalent to over- + lip.
noun
- The upper lip.“They seem to her still so young, hardly more than children, really, even Adam—especially Adam—with that babyishly fat overlip that trembles so when he is excited or upset.”
- An upper lip that extends too far out and down. (Compare overbite.)