pelvic fin is a noun meaning "either of a pair of fins attached to the pelvic girdle in fishes that help control the direction of movement; correspond to hind limbs of a land vertebrate". It carries one recorded sense.
either of a pair of fins attached to the pelvic girdle in fishes that help control the direction of movement; correspond to hind limbs of a land vertebrate
Definitions, synonyms and semantic relations for pelvic fin come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.