Meaning of thick-un | Babel Free

Definitions

1. A crown coin; its value, five shillings.
   UK, historical, obsolete, slang
2. A sovereign coin.
   UK, historical, obsolete, slang

Examples

“Half-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.”

“"That's a good yarn. Now you can't fool me. Tom, I'm not one o' those duds that pay⟳ you a thick 'un for an hour in the dark."”

CEFR level