- bradycardia
- braggart
- brainwash
- brain fog
- bramble bush
- build bridges
- belleter
- buckle
- buck someone up
- buccaneer
- brutal
- bread-fruit
- breadth
- brotherly
- break
- broomstick exercise
- breath of fresh air
- broken grain
- breather
- breathtaking
- broken
- broil
- broadcast
- brevity
- bringing down
- bridge
- brindleberry
- brimful
- brimstone
- bunch
- break a leg
- bride bed
- bride and bridegroom
- blind flying
- bridal shower
- brickyard
- brick
- bribery
- breezy
- breeding ground
- breeding
- breed like rabbits
- breathless
- bedtime
- break even
- brocade
- broccoli
- brochure
- broke off
- broken home
- borborygmus
- brow
- browbeat
- brown colour
- break down
- brown-coloured
- browned off
- brutalize
- brutify
- bryology
- break a promise
- breadcrumb
- bubbly
- buck
- bread the ice
- bugbear
- bugger
- brandish
- build
- brand
- build up
- builder
- bullring
- bumble bee
- bumbling
- burden
- burgeon
- burglar
- branch
- burial ground
- bramble
- burst
- bury
- burying ground
- brake van
- butteress
- brainy
- brag
- buttermilk
- bracket
- buttock
- button
- buttonhole
- bpi
- burin
- by a narrow margin
- by all odds
- brahmins
- boyish
- by degrees