Definition

Noun: 1. A decorative projection on the rear of an automobile: One of a pair of ornamental fins, often made of metal, that were a distinctive design feature on cars, especially from the late 1940s through the 1950s. 2. A vertical stabilizer on an aircraft: A fixed vertical surface at the rear of an airplane that provides stability in flight, helping to prevent unwanted side-to-side (yawing) motion. This is a key part of the aircraft's tail assembly.

Examples

• Automotive context:
  • The 1959 Cadillac is famous for its enormous, dramatic tailfins.
  • The car's sleek design was accentuated by its sharp tailfins.
• Aeronautical context:
  • The damage to the airplane's tailfin required immediate inspection.
  • Engineers analyzed the airflow over the vertical tailfin.

Advanced Usage

• "Tailfin era": A term used to describe the period in automotive design, particularly in American cars, when prominent tailfins were fashionable.
  • The 1957 Chevrolet Bel Air is an iconic car from the tailfin era.

Variants and Related Words

• Fin: A more general term for a thin, flat component used for stability, which can refer to parts on cars, aircraft, or aquatic animals.
• Vertical stabilizer: The technical aeronautical term for an aircraft's tailfin.
• Dorsal fin: The fin on the back of a fish or marine mammal, which is the biological analogue.

Synonyms

• For automobiles: Fin, rear fin, decorative fin.
• For aircraft: Vertical stabilizer, vertical fin, rudder fin (note: the rudder is typically the movable part attached to the tailfin).

Related Phrases

• Tailfin design: Refers specifically to the styling of automobiles featuring this element.
  • The concept car pays homage to classic tailfin design.

Noun

1. one of a pair of decorations projecting above the rear fenders of an automobile
2. a stabilizer that is part of the vertical tail structure of an airplane