- British Overseas Territory
- British shorthair
- British Somaliland
- British Standard brass thread
- British Standard fine thread
- British Standard pipe thread
- British Standards Institution
- British Standard Time
- British Standard Whitworth thread
- British Summer Time
- British Technology Group
- British thermal unit
- British Union of Fascists
- British Virgin Islands
- British warm
- British West Africa
- British West Indies
- British White
- Brit Lit
- brit milah
- Briton
- Britpack
- Britpop
- britt
- Brittany
- brittany blue
- Brittany spaniel
- Britten
- brittle
- brittle bone disease
- brittlebush
- brittle fern
- brittle star
- brittle-star
- Britton
- Brittonic
- britzka
- Brix scale
- BRM
- BRN
- Brno
- Brno chair
- bro
- bro.
- broach
- broad
- Broad
- B-road
- broad arrow
- broadax
- broadband
- broad-based
- broad bean
- broadbill
- broadbrim
- broadbrush
- broad-brush
- broadcast
- broadcaster
- broadcasting
- broadcast journalism
- broadcast journalist
- Broad Church
- broadcloth
- broad construction
- broad daylight
- broaden
- broadfaced
- broad gauge
- broad-gauge
- broad glass
- broad hatchet
- broadhead
- broad in the beam
- broad jump
- broad-jump
- Broadlands
- broadleaf
- broad-leaved
- broad-leaved maple
- broadline
- broadloom
- broadloom carpet
- broadly
- broad-minded
- Broadmoor
- broadness
- broad reach
- Broad River
- Broads
- broad seal
- broadsheet
- broad shoulders, have
- broadside
- broad-spectrum
- broadsword
- broadtail
- broadus
- Broadview Heights
- Broadway
- broadwife
- broad-winged hawk
- brob
- Brobdingnag
- Brobdingnagian
- Broca
- Broca's aphasia
- Broca's area
- brocade
- brocatel
- brocatelle
- broccoli
- Broccolini
- broccoli rabe
- broch
- brochantite
- broche
- broché
- brochette
- brocho
- brochure
- brock
- brockage
- Brocken
- Brocken bow
- Brocken specter
- brocket
- Brockhouse
- Brockton
- Brockville
- Brocot escapement
- broddle
- Broderick
- broderie anglaise
- brodiaea
- brodie
- Brodsky
- Broederbond
- broekies
- bro-ey
- brog
- Broga
- brogan
- Broglie
- brogrammer
- brogue
- broider
- broil
- broiler
- broiler house
- brokage
- broke
- brokeback
- broken
- Broken Arrow
- broken-check
- broken chord
- broken coal
- broken consort
- broken-down
- broken field
- broken-field
- broken heart
- brokenhearted
- Broken Hill
- broken home
- broken ice
- broken line
- broken lot
- broken pediment
- broken play
- broken reed
- broken twill weave
- broken up
- broken water
- broken wind
- broken-winded
- broker
- brokerage
- broker-dealer
- brokered convention
- broking
- brolga
- B-roll
- brolly
- brom-
- bromal
- bromance
- bromantic
- bromate
- bromatium
- Bromberg
- bromegrass
- brome grass
- bromelain
- bromeliad
- bromelin
- bromeosin
- Bromfield
- bromhidrosis
- bromic
- bromic acid
- bromide
- bromide paper
- bromidic
- brominate
- bromine
- bromine pentafluoride
- bromism
- bromize
- Bromley
- bromo-
- bromoacetone
- bromochloromethane
- bromocriptine
- bromoform
- bromoil
- bromoil process
- bromomethane
- bromosexual
- bromouracil
- brompheniramine
- Brompton mixture
- Bromsgrove
- bronc
- bronch-
- bronchi
- bronchia
- bronchial
- bronchial asthma
- bronchial tube
- bronchial tubes
- bronchiectasis
- bronchiole
- bronchiolitis
- bronchitis
- broncho
- broncho-
- bronchocandidiasis
- bronchocele
- bronchodilator
- bronchography
- bronchopneumonia
- bronchopulmonary
- bronchorrhagia
- bronchoscope
- bronchoscopy
- bronchospasm
- bronchus
- bronco
- broncobuster
- Brontë
- Brontë, charlotte and emily
- brontide
- brontobyte
- brontosaur
- brontosaurus
- Brontosaurus
- Bronx
- Bronx cheer
- bronze
- bronze age
- Bronze Age
- bronzed grackle
- bronze medal
- bronze medalist
- bronzer
- Bronze Star
- bronze whaler
- bronzing
- Bronzino
- bronzite
- brooch
- brood
- brood bitch
- brood bud
- brooder
- brooding
- broodmare
- brood parasite
- brood parasitism
- brood pouch
- broody
- brook
- Brook
- Brooke
- Brook Farm
- Brookfield
- Brookhaven
- brookie
- Brookings
- brookite
- brooklet
- brooklime
- Brookline
- Brooklyn
- Brooklyn Bridge
- Brooklyn Center
- Brooklynese
- Brooklynite
