TAILFIN
a fin at the posterior extremity of a fish's body, typically continuous with the tail.
a projecting vertical surface on the tail of an aircraft, providing stability and typically housing the rudder.
an upswept projection on each rear corner of a car, popular in the 1950s.
a projecting vertical surface on the tail of an aircraft, providing stability and typically housing the rudder.
an upswept projection on each rear corner of a car, popular in the 1950s.