# fat innkeeper

> English word · Noun

## Definitions
1. Urechis caupo, a kind of spoonworm.

## Etymology
So called from its shape and the fact that its tunnels often contain other animals.

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