# hen's tooth

> English word · Noun

## Definitions
1. Anything not naturally occurring.

## Etymology
Example of a jocularly non-existent phenomenon, as many birds lack any teeth (having developed a bill instead). Compare horsefeathers and when pigs fly.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/hen-s-tooth