tailfin

tail fin

also tail·fin (tāl′fĭn′)n.1. A fin at the posterior part of the body of a fish, crustacean, whale, or other aquatic animal.2. An ornamental projection shaped like a fin on the rear fender of an automobile. Also called fin¹.3. A fin at the tail end of an aerodynamic or hydrodynamic object such as an airplane or surfboard, used to provide directional control or stability.

tailfin

(ˈteɪlˌfɪn) nthe fin situated at the tail of a fisha vertical fin situated at the rear of an aircraft to give lateral stabilitya protruding decorative projection on the rear of a car

Thesaurus

Noun	1.	tailfin - a stabilizer that is part of the vertical tail structure of an airplanetail fin, vertical fin, vertical stabiliser, vertical stabilizerstabilizer - airfoil consisting of a device for stabilizing an aircraftvertical tail - the vertical airfoil in the tail assembly of an aircraft
	2.	tailfin - one of a pair of decorations projecting above the rear fenders of an automobilefin, tail finauto, automobile, car, motorcar, machine - a motor vehicle with four wheels; usually propelled by an internal combustion engine; "he needs a car to get to work"decoration, ornament, ornamentation - something used to beautify

Translations

вертикальный стабилизаторкильхвостовой плавник