English

fish louse

From fish + louse.

Formed from fish + louse

Proto-Indo-European *piskós

Proto-Germanic *fiskaz

Proto-West Germanic *fisk

Old English fisċ

Middle English fisch ‘an animal that inhabits the water or the meat…’

English fish

Proto-Germanic *lūs

Proto-West Germanic *lūs

Old English lūs

Middle English lous

English louse

Today it means

noun Certain members of class Copepoda.

Language periods are conventional ranges, not dates for this word.

Etymograph / fish louse