- a bra:hmāṉ sage
- a bra:hmāṉ in the third stage of his life—an anchorite
- a bracket
- a brawl
- a bread fried in ghee or oil
- a breast plate
- a brewery
- a bride
- a buckle
- a bubbling noise
- a buck shot
- a bubbling noise (such as produced while smoking a hooqah or by movement of air through the intestines)
- a budget
- a bulge
- a bull (in speculation)
- a bull in a china shop
- a bulletin
- a bulletin of information
- a bullock
- a bullock_cart
- axillary node
- axillary vein
- a bun
- a bun_shaped hair_do
- a bunch of flowers
- a bund to give way
- a bundle of nerves
- a bungalow
- axial
- axial motion
- axial muscle
- axial precession
- axilla
- axillary artery
- axillary cavity
- axiom
- axiomatical
- axone
- ayah
- ayatollah
- ayatollah khomeini
- aye
- ayatollah ruholla khomeini
- aythya affinis
- ayushi
- ayurveda
- aythya valisineria
- az
- az zarqa
- ampere_second