freshwater hydra (English, noun)
expansion: freshwater hydra (plural freshwater hydras)
Senses:
glosses: A solitary polyp, of species Hydra vulgaris, similar to a sea anemone consisting of a hollow cylinder about 10 mm long with a mouth surrounded by tentacles, usually found attached to the under surfaces of water plants in ponds and streams.
Forms:
form: freshwater hydras
tags: plural