Buck’s face, a cuckold.
Bufe, a dog.
Butt’s eye, a crown, or five shilling piece.
Bung, a purse, pocket, or fob.
Bur, a hanger-on, a dependant.
Bum bailiff, a sheriff’s officer who arrests debtors; so called perhaps from following his prey, and being at their bums, or as the vulgar phrase is, hard at their a---s. Blackstone says it is a corruption of bound bailiff, from their being obliged to give bond for their good behaviour.
Bum brusher, a schoolmaster.
Bus-napper, a constable.
Bus-napper’s kenchin, a watchman.
Bye-blow, a bastard.