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caudal fin

noun
1.
the terminal vertical fin of a fish.
Also called tail fin.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for caudal-fin

caudal fin

noun
1.
the tail fin of fishes and some other aquatic vertebrates, used for propulsion during locomotion
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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9
12
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