fin

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fin /ˈfɪn/ noun
plural fins
fin
/ˈfɪn/
noun
plural fins
Learner's definition of FIN
[count]
: a thin flat part that sticks out from the body of a fish and is used in moving or guiding the fish through water
: a part on a machine (such as a car or airplane) that is shaped like a fish's fin see also tail fin

— finned

/ˈfɪnd/ adjective
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