- basanite
- bascinet
- bascule
- base
- base box
- base bullion
- base camp
- base community
- base component
- base estate
- base exchange
- base head
- base hit
- base hospital
- base jumping
- base level
- base load
- base map
- base metal
- base on balls
- base pair
- base pairing
- base path
- base pay
- base period
- base price
- base rate
- base rate fallacy
- base runner
- base speed
- base station
- base tenant
- base unit
- base-pairing
- base-pairing rules
- baseball
- baseball cap
- baseball glove
- baseballer
- baseband
- baseboard
- baseborn
- baseburner
- basecoat
- based
- basehearted
- baseless
- baseline
- baseliner
- baseman
- basement
- basement complex
- basement membrane
- baseness
- basenji
- baseplate
- bases
- bash
- bash up
- bashaw
- bashful
- bashi-bazouk
- bashibazouk
- bashing
- bashment
- basho
- basiate
- basic
- basic English
- basic dress
- basic dye
- basic education
- basic industry
- basic lead carbonate
- basic oxygen process
- basic plumage
- basic process
- basic proposition
- basic rate
- basic salary
- basic salt
- basic slag
- basic statement
- basic steel
- basic training
- basic vocabulary
- basic wage
- basically
- basicity
- basicranial
- basidia
- basidiocarp
- basidioma
- basidiomycete
- basidiomycetous
- basidiomycota
- basidiospore
- basidium
- basifixed
- basifugal
- basify
- basil
- basil thyme
- basilar
- basilar membrane
- basilard
- basilect
- basilic
- basilic vein
- basilica
- basilican
- basilisk
- basin
- basin range
- basinet
- basing point
- basion
- basipetal
- basis
- basis of articulation
- basis point
- basis weight
- bask
- bask in the sun
- basket
- basket case
- basket catch
- basket chair
- basket clause
- basket dinner
- basket fern
- basket fish
- basket flower
- basket hilt
- basket star
- basket weave
- basket-handle arch
- basket-of-gold
- basket-star
- basketball
- basketful
- basketry
- basketweaver
- basketwork
- basking shark
- basmati
- basmati rice
- basnet
- bason
- basophil
- basophilia
- basophilic
- basque
- bass
- bass clef
- bass drum
- bass fiddle
- bass guitar
- bass horn
- bass reflex
- bass response
- bass saxophone
- bass staff
- bass viol
- bass-bar
- bassackwards
- bassarisk
- basse-taille
- basset
- basset horn
- basset table
- bassinet
- bassist
- basso
- basso cantante
- basso continuo
- basso profundo
- basso rilievo
- basso-relievo
- bassoon
- basswood
- bast
- bast fiber
- basta
- bastard
- bastard amber
- bastard culverin
- bastard cut
- bastard eigne
- bastard file
- bastard indigo
- bastard mahogany
- bastard measles
- bastard pointing
- bastard title
- bastard toadflax
- bastard wing
- bastard-saw
- bastardization
- bastardize
- bastardly
- bastardry
- bastardy
- baste
- bastel house
- baster
- basti
- bastide
- bastille
- bastinade
- bastinado
- basting
- bastion
- bastnaesite
- bat
- bat an eye
- bat around
- bat boy
- bat girl
- bat mitzvah
- bat one thousand
- bat printing
- bat ray
- bat the breeze
- bat turn
- bat-eared
- bat.
- batard
- batata
- batavia
- batch
- batch plant
- batch processing
- bate
- bateau
- bateau neck
- bated
- bateleur
- bateleur eagle
- batement light
- batfish
- batfowl
- bath
- bath bun
- bath cube
- bath mat
- bath mitzvah
- bath salts
- bath sheet
- bath sponge
- bath tissue
- bath towel
- bathe
- bather
- bathers
- bathetic
- bathhouse
- bathing beauty
- bathing cap
- bathing costume
- bathing machine
- bathing suit
- bathing-machine
- batho-
- bathochromic
- batholith
- bathometer
- bathophilous
- bathos
- bathrobe
- bathroom
- bathtub
- bathtub gin
- bathtub race
- bathwater
- bathy-
- bathyal
- bathylimnetic
- bathymetry
- bathypelagic
- bathypelagic zone
- bathyscaph
- bathyscaphe
- bathysphere
- bathythermogram
- bathythermograph
- batik
- bating
- batiste
- batman
- baton
- baton round
- baton twirler
- batrachian
- batrachotoxin
- bats
- bats in one's belfry, have
- bats-in-the-belfry
- bats-wing coral-tree
- batshit