# tailfin

> English word · Noun

## Definitions
1. A fin at the tail of a fish, caudal fin
2. A fin on the tail of an aircraft, vertical stabilizer
3. A fin-like projection at the rear of a car, common on American cars of the 1950s.

## Etymology
From tail + fin.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/word/tailfin