- breather
- breather cap
- breather pipe
- breather plug
- breather roof
- breather value
- breathing
- breathing apparatus
- breathing capacity
- breathing gauge
- breathing line
- breathing loss
- breathing mode
- breathing stress
- breathing-space
- breathless
- breathlessly
- breathtaking
- breathtakingly
- breathy
- breccia
- brecciaed vein
- brecciate
- brecciate zone
- brecciation
- bred
- bree
- breech
- breech birth
- breech delivery
- breech fitting
- breech lock
- breech presentation
- breech-block
- breech-loader
- breech-loading
- breech-sight
- breeches
- breeches buoy
- breeches joint
- breeches pipe
- breeching
- breeching piece
- breeclated
- breed
- breeder
- breeder reactor
- breeding
- breeding blanket
- breeding colour
- breeding cycle
- breeding process
- breeding reaction
- breeding reactor
- breeding season
- breeding stock
- breeding twain
- breeding-fire
- breeding-ground
- breeze
- breeze aggregate
- breeze brick
- breeze concrete
- breeze-block
- breezeway
- breezily
- breeziness
- breezy
- bregma
- bregmatic
- bregmatic space
- brekker
- bremsstrahlung
- bremsstrahlung source
- bren
- bren carrier
- bren gun
- brent
- brent-goose
- brethren
- brettice
- breve
- brevet
- breviary
- brevier
- brevity
- brevity code
- brew
- brew ketchup
- brew-house
- brewage
- brewed coffee
- brewer
- brewery
- brewery cellar
- brewery syrup
- brewhouse
- brewing
- brewing diagram
- brewing industry