The initial idioms of the letter B

bargain	bargain-basement
bargain-bin	bargain down
bargain on	bargain for
bargaining chip	bargaining counter
barge	barge in
barge in(to)	barge in on
barge into	wouldn't touch it with a bargepole
argy-bargy	bari
bark	bark at
bark at the moon	bark is worse than bite
bark is worse than one's bite, one's	bark out at
barking dog never bites	barking dogs seldom bite
barking spider	barking up the wrong tree
bark up the wrong tree	cry barley
Barmecide feast	barmy on the crumpet