The initial idioms of the letter B

brazen	brb
breach of etiquette	breach of promise
breach	bread always falls on the buttered side
bread and butter	bread and circuses
bread and water	Bread is the staff of life
bread-and-butter letter	breadbasket
bread	breadline
breadth	break (one's) balls
break (one's) duck	break (one's) fall
break (someone)	break (someone's) serve
break a butterfly on a wheel	Who breaks a butterfly upon a wheel?
break a code	break a law
break a leg	Break a leg!
break a record	break a story
break a sweat	break against