- bushfire
- bolus of food
- bolt upright
- bog someone down, bog something down
- bay
- bodily pain
- be in two minds
- bush
- bodily embellishments
- boat people
- boast
- bus wire
- bedding
- board
- bo-tree
- bmc
- burnt offerings to agni
- behindhand
- blue-breasted quail
- beige
- blue water
- blue sky
- blue planet
- belonging
- belt up
- be of sound mind
- blue colour
- blue chip
- blowsy
- be one too many
- be out of pocket
- blowing sound
- blowing in the hair
- bemoan
- burnt off
- blow great gun
- be please with
- blow
- bestial
- blood transfusion
- blood runs cold
- betide
- blood money
- blood donation
- blogger
- betrayer
- burn away
- bitchy
- blistering
- blister
- bliss
- blast-off
- blinkered
- bunker
- blow up
- blessed
- bluff
- blench
- bungle
- bleed
- blame
- beanpole
- bear
- bear a hand
- blackout
- bear no malice
- bear on
- blackleg
- bodyguard
- biweekly
- bank
- betoken
- betray
- bogus
- boil
- bound
- bust
- biorhythm
- break a leg
- bugle
- bill of lading
- bismillah
- biofuel
- bigamy
- bellfruit
- borborygmus
- bronze age
- bituminize
- blacksmiths workshop
- bachelor girl
- bacillary
- back benchers
- back charge
- bacteria
- bacterioid
- bactrian camel
- bad antecendents
- bad at
- bad deal
- baffling