tail fin

noun

1

: the terminal fin of a fish or cetacean

2

: fin sense 2b

Examples of tail fin in a Sentence

Recent Examples on the Web

Unlike dolphins and stingrays, which typically show a single fin before disappearing underwater, sharks often reveal both their dorsal and tail fins. — Angelica Stabile, FOXNews.com, 31 July 2026

On a tail fin, the crew had stencilled a Playboy Bunny smoking a cigar. — Ed Caesar, New Yorker, 25 May 2026

Crosthwaite & Gardiner report that fitting the streamlined bodywork, cockpit canopy and tail fin over the wooden frame was particularly labor-intensive. — New Atlas, 8 May 2026

Two images posted on Telegram by Israeli public broadcaster Kan, a CNN affiliate, showed a KC-135 aircraft with the top of its tail fin missing. — Brad Lendon, CNN Money, 13 Mar. 2026

Word History

First Known Use

1681, in the meaning defined at sense 1

Rhymes for tail fin

• akin
• auxin
• buckskin
• chagrin
• crankpin
• deerskin
• foreskin
• fuchsin
• herein
• kingpin
• linchpin
• pigskin