# thill

> English word · Noun · IPA /θɪl/

## Definitions
1. One of the two long pieces of wood, extending before a vehicle, between which a horse is hitched; a shaft.
2. The shallow stratum of underclay that lies under a seam of coal; the bottom of a coal-seam.

## Etymology
From Middle English thille, thylle, from Old English þille (“board; floorboard; plank; stake; pole”), from Proto-West Germanic *þilljā, from Proto-Germanic *þiljǭ (“board; floorboard; deck”), from Proto-Indo-European *tel- (“plank; board”). Cognate with Dutch deel, German Low German Deel (> English deal (“plank”)), German Diele, Swedish tilja, Icelandic þilja. Akin to English theal (“board; plank”). Doublet of deal (etymology 3).

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