pelvic fin

noun

(in fishes) either of a pair of fins on the lower surface of the body, corresponding to the hind limbs of a land vertebrate; ventral fin.

Origin of pelvic fin

First recorded in 1905–10

Words nearby pelvic fin

pelvic cavity, pelvic cellulitis, pelvic diaphragm, pelvic direction, pelvic fascia, pelvic fin, pelvic floor, pelvic ganglion, pelvic girdle, pelvic inflammatory disease, pelvic limb

British Dictionary definitions for pelvic fin

pelvic fin

noun

either of a pair of fins attached to the pelvic girdle of fishes that help to control the direction of movement during locomotion