(rare, sciences) A butterfly or moth.

A village in Bedford borough, Bedfordshire (OS grid ref SP9555). / A village in South Cambridgeshire district, Cambridgeshire (OS grid ref TL6453).

The boundary line of a surface. / (geometry) A one-dimensional face of a polytope. In particular, the joining line between two vertices of a polygon; the place where two faces of a polyhedron meet.

(dated slang) A sexually transmitted disease.