- black perch
- black pewter
- black pine
- black pit
- black poplar
- black powder
- black project
- black propaganda
- black pudding
- black quarter
- black racer
- black raspberry
- black rat
- black ring
- black root rot
- black rot
- black ruff
- black run
- black rust
- black sage
- black sapote
- black scoter
- black sea bass
- black section
- black selenium
- black shag
- black shank
- black sheep
- black site
- black skimmer
- black smoker
- black snakeroot
- black spot
- black spruce
- black squall
- black squirrel
- black stem
- black stump
- black sucker
- black swallowwort
- black swan
- black tar heroin
- black taxi
- black tea
- black tie
- black tracker
- black treacle
- black tree fern
- black velvet
- black vomit
- black vulture
- black walnut
- black water
- black wattle
- black whale
- black widow
- black work
- black-a-vised
- black-and-blue
- black-and-tan terrier
- black-and-white
- black-backed gull
- black-bag
- black-bag job
- black-bellied plover
- black-billed cuckoo
- black-billed magpie
- black-capped chickadee
- black-coated
- black-crowned night heron
- black-eyed Susan
- black-eyed pea
- black-figure
- black-footed ferret
- black-headed gull
- black-hearted
- black-letter day
- black-light trap
- black-market
- black-marketeer
- black-on-black
- black-tailed deer
- black-tie
- black-water fever
- blackacre
- blackamoor
- blackback flounder
- blackball
- blackbead
- blackbeetle
- blackbelly rosefish
- blackberry
- blackberry lily
- blackbird
- blackbirder
- blackbirding
- blackboard
- blackboard jungle
- blackbody
- blackbody radiation
- blackbuck
- blackbutt
- blackcap
- blackcock
- blackcod
- blackcurrant
- blackdamp
- blacken
- blackened
- blackface
- blackfellow
- blackfellow's bread
- blackfin
- blackfire
- blackfish
- blackfly
- blackguard
- blackhead
- blackheart
- blacking
- blackjack
- blackleg
- blacklist
- blackly
- blackmail
- blackness
- blackout
- blackpatch
- blackplate
- blackpoll
- blackpoll warbler
- blacksmith
- blacksmithing
- blacksnake
- blackstrap molasses
- blacktail
- blackthorn
- blacktip shark
- blacktongue
- blacktop
- blackwash
- blackwater
- blackwater fever
- blackwater rafting
- blackweed
- blackwood
- blackwork
- blacky
- blad
- bladder
- bladder campion
- bladder fern
- bladder kelp
- bladder ketmia
- bladder senna
- bladder worm
- bladder wrack
- bladdered
- bladdernose
- bladdernut
- bladderpod
- bladderwort
- bladderwrack
- bladdery
- blade
- blade apple
- blade grader
- blade slap
- blade-shearing
- bladebone
- bladed
- bladelet
- blading
- blady grass
- blae
- blaeberry
- blaes
- blaff
- blag
- blagging
- blague
- blah
- blah-blah-blah
- blain
- blamable
- blame
- blame culture
- blameable
- blamed
- blameful
- blameless
- blamestorm
- blameworthy
- blanc
- blanc de blancs
- blanc fixe
- blanch
- blanched
- blancmange
- bland
- bland out
- blandish
- blandishment
- blandishments
- blank
- blank cartridge
- blank check
- blank cheque
- blank endorsement
- blank shell
- blank slate
- blank tape
- blank verse
- blank wall
- blankbook
- blanket
- blanket bath
- blanket bog
- blanket chest
- blanket finish
- blanket roll
- blanket sheet
- blanket stitch
- blanket toss
- blanket-flower
- blanket-stitch
- blanketing
- blankety
- blankety-blank
- blankly
- blanquette
- blanquette de veau
- blanquillo
- blare
- blarney
- blart
- blaspheme
- blasphemer
- blasphemous
- blasphemy
- blast
- blast cell
- blast furnace
- blast injection
- blast lamp
- blast off
- blast wave
- blast-furnace cement
- blasted
- blastema
- blasting
- blasting gelatin
- blasting powder
- blasto-
- blastochyle
- blastocoel
- blastocyst
- blastoderm
- blastodisc
- blastodisk
- blastoff
- blastogenesis
- blastoma
- blastomere
- blastomycete
- blastomycosis
- blastopor
- blastopore
- blastosphere
- blastospore
- blastostyle
- blastula
- blastulation
- blasé
- blat
- blatant
- blatantly
- blate
- blather
- blatherskite
- blatted
- blatter
- blaubok
- blaw
- blaxploitation
- blazar
- blaze
- blaze a trail
- blaze orange
- blazer
- blazes
- blazing
- blazing star
- blazon
- blazonry
- bldg
- bldg.
- bldr.
- bleach
- bleacher