Butty
British SlangDefinition
A sandwich, typically on buttered bread; also, in some regions (e.g., mining communities), a term for a workmate or partner.
Examples
"I grabbed a bacon butty from the café before my shift."
"Nothing beats a chip butty on thick, buttered bread."
"Back at the colliery, I always teamed up with my butty to tackle the toughest jobs."