Thiol vs Thill - What's the difference?
thiol | thill |
(organic chemistry) a univalent organic radical (-SH) containing a sulphur and a hydrogen atom; a compound containing such a radical
One of the two long pieces of wood, extending before a vehicle, between which a horse is hitched; a shaft.
The thin stratum of underclay which lies under a seam of coal; the bottom of a coal-seam.
*1888 , Rudyard Kipling, ‘At Twenty-two’, In Black and White , Folio Society 2005, p. 405:
*:One by one, Janki leading, they crept into the old gallery – a six-foot way with a scant four feet from thill to roof.