fish louse

noun

any of numerous small crustaceans, especially certain copepods, parasitic on the skin and gills of fish.

Words nearby fish louse

fish hawk, fish in troubled waters, fish joint, fish knife, fish ladder, fish louse, fish meal, fish or cut bait, fish out, fish out of water, fish out of water, a

British Dictionary definitions for fish louse

fish louse

noun

any small flat rounded crustacean of the subclass Branchiura, having sucking mouth parts: parasites of fish