- butt coupling
- butt end
- Butt furnace
- butt mill
- butt welder
- butt welding
- butterfly bolt
- butterfly cock
- butterfly damper
- butterfly gate
- butterfly network
- butterfly nut
- butterfly valve
- buttock
- buttock lines
- button hole
- buttress dam
- buttress screwthread
- buttress stem
- buttressed wall
- butyl alcohol
- butylated
- buyer
- buzzer
- buzzer signal
- by analogy
- by number
- by-low
- by-pass
- by-path
- by-product
- by-road
- by-way
- bypass air
- bypass capacitor
- bypass line
- bypass pipe
- bypassable traffic
- bypassing duct
- byroad
- bystreet
- byte pointer
- byte stuffing
- byte synchronization
- bywash
- cab brick
- cabaret
- cabin
- cabinet drier
- cabinet freezer
- cabinet froster
- cabinet lock
- cabinetwork
- cable
- cable armoring
- cable armouring
- cable box
- cable channel
- cable communication
- cable compound
- cable conduit
- cable connection
- cable connector
- cable conveyor
- cable drilling
- cable duct
- cable entry
- cable fittings
- cable hanger
- cable haulage
- cable heads
- cable joint
- cable jointer
- cable manhole
- cable network
- cable pair
- cable section
- cable shoe
- cable tensioner
- cable traction
- cable tray
- cablecast
- cabling
- cache buffer
- cache line
- cacoethes
- cad
- cadastral map
- cade oil
- cage rotor
- caillary tube
- cairn
- caisson foundation
- caking
- calc sinter
- calcareous spar
- calciferous
- calcimeter
- calcinator
- calcined gypsum