fin
n//fɪn//fena, labb, simfötter
(ichthyology, zootomy) One of the appendages of a fish, used to propel itself and to manoeuvre/maneuver.
A thin, rigid component of an aircraft, extending from the fuselage and used to stabilise and steer the aircraft.
A similar appendage of a cetacean or other marine animal.
A device worn by divers and swimmers on their feet.