Coachwheel

Origin

From coach ("horse-drawn carriage") + wheel

Full definition of coachwheel

Noun

coachwheel

(plural coachwheels)

A cartwheel, the wheel of a horse-drawn coach
(UK, historical, obsolete slang) A crown coin; its value, 5 shillings.

1859, J.C. Hotten, A Dictionary of Modern Slang, Cant, and Vulgar WordsHalf-a-crown is known as an alderman, half a bull, half a tusheroon, and a madza caroon; whilst a crown piece, or five shillings, may be called either a bull, or a caroon, or a cartwheel, or a coachwheel, or a thick-un, or a tusheroon.