river dolphin (English, noun)
expansion: river dolphin (plural river dolphins)
Senses:
topics: biology
natural-sciences
zoology
glosses: Any dolphin that is found only in fresh or brackish water, now considered in one of three superfamilies Platanistoidea, †Lipotoidea, Inioidea, all in parvorder Odontoceti or in a grouping with hippopotamuses.
Forms:
form: river dolphins
tags: plural