: either of the fins of a fish that correspond to the forelimbs of a quadruped
Examples of pectoral fin in a Sentence
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The lengthy pre-copulation stage involved all three sharks motionless on the seafloor for nearly an hour, after which the female started swimming with one male shark biting onto each of her pectoral fins.—Jennifer Ouellette, ArsTechnica, 23 Sep. 2025 Ghost sharks use their forehead teeth to grip a female mate's pectoral fins while reproducing, according to video records examined in the study.—Staff Author, PEOPLE, 10 Sep. 2025 Speaking of the battery, it's integrated directly into the pectoral fins.—New Atlas, 8 Sep. 2025 They are so named for the black color on the tips of their dorsal and pectoral fins.—David Goodhue, Miami Herald, 3 Sep. 2025 See All Example Sentences for pectoral fin
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