tail fin

noun
Updated on: 16 May 2018

Definition of tail fin

1 : the terminal fin of a fish or cetacean
2 : fin 2b

Recent Examples of tail fin from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'tail fin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of tail fin

1681

in the meaning defined at sense 1

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TAIL FIN Defined for English Language Learners

tail fin

Definition of tail fin for English Language Learners

  • : a fin at the back end of a fish, whale, etc.

  • : a decorative part on the back of a car that is shaped like a fish's fin


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