The initial idioms of the letter B

one in a million	billow out
bim	bimbo
bind down	bind off
bind over	bind together
bind up	bindle
bind	binge and purge
binge-watch	binged
binge	Bingo!
bin	bio
bio break	bio queen
biological	biological clock is ticking
BION	featherless biped
You bet your life!	bird
bird has flown, the	bird in (one's) bosom
bird in the hand	bird in the hand is worth two in the bush