Answer:

cosh

AnswerCrossword Clue
COSHBritish blackjack
COSHBrit's blackjack
COSHHit on the head
COSHKnock on the noggin, to a Brit
COSHBobby's stick
COSHBludgeon, in Brighton
COSHMugger's weapon, in Britain
COSHBludgeon
COSHBlackjack
COSHEnglish blackjack.
COSHBlackjack in England.
COSHBlackjack, British style.
COSHBlackjack: Brit. slang.
COSHBlackjack, in London
COSHSnug, in Scotland
COSHBlackjack, in Britain
COSHTidy, in Scotland
COSHBlackjack, in England
COSHBlackjack, in Soho
COSHSoho blackjack
COSHBludgeon, in Bristol
COSHBlackjack, in Blackpool
COSHBritish bludgeon
COSHBobby's blackjack
COSHBritish bopper
COSHBludgeon, in Britain
COSHThug's bludgeon