Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun ventral_fin

1 sense of ventral fin

Sense 1
pelvic fin, ventral fin -- (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)
       => fin -- (organ of locomotion and balance in fishes and some other aquatic animals)