Any of several small moths of the family Tineidae whose larvae feed on skins, owl pellets, and other organic material; (now) specifically the common and widespread Monopis laevigella.
Origin
Mid 19th century.
Definition of skin moth in US English:
skin moth
noun
Any of several small moths of the family Tineidae whose larvae feed on skins, owl pellets, and other organic material; (now) specifically the common and widespread Monopis laevigella.