# sitfast

> English word · Noun

## Definitions
1. A callous with inflamed edges, on the back of a horse, under the saddle.

## Etymology
From sit + fast.

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