fin

Pronunciation

• enPR: fĭn, IPA ^(key): /fɪn/

• Audio (US)

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Noun

Singular fin

Plural fins

Dolphins have fins

1. (countable) A fin is a wing like organ that is attached to some parts of the body of undersea animals. It is used for turning in a certain direction, balancing, and for propelling themselves.

   Some fish have a dorsal fin.