Mush
British SlangDefinition
Mush: British slang—chiefly southern—meaning a man/mate (used in direct address); also the mouth or face. Origin: Romani moosh (“man”).
Examples
"Alright, mush, you coming down the pub later?"
"Shut your mush for a minute and let her speak."
"He caught an elbow in the mush during the five-a-side."