Definition of fish louse in English:

fish louse

Line breaks: fish louse

noun

An aquatic crustacean which is a parasite of fish, typically attached to the skin or gills:

Definition of fish louse in:

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Word of the day oleaginous
Pronunciation: ˌəʊlɪˈadʒɪnəs
adjective
rich in, covered with, or producing oil; oily