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dorsal fin
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noun
the fin or finlike integumentary expansion generally developed on the back of aquatic vertebrates.
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Origin of dorsal fin
First recorded in 1760–70
Words nearby dorsal fin
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
How to use dorsal fin in a sentence
British Dictionary definitions for dorsal fin
dorsal fin
noun
any unpaired median fin on the backs of fishes and some other aquatic vertebrates: maintains balance during locomotion
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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