Main Entry:

¹fin

Pronunciation:

\ˈfin\

Function:

noun

Etymology:

Middle English finn, from Old English

Date:

before 12th century

1: an external membranous process of an aquatic animal (as a fish) used in propelling or guiding the body — see fish illustration2: something resembling a fin: as a: hand, arm b (1): an appendage of a boat (as a submarine) (2): an airfoil attached to an airplane for directional stability c: flipper 1b d: any of the projecting ribs on a radiator or an engine cylinder

— fin·like \-ˌlīk\ adjective

— finned \ˈfind\ adjective