# setfast

> English word · Noun · IPA /ˈsɛtfɑːst/

## Definitions
1. A tumour on a horse's back.

## Etymology
From set + fast.

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