- bolt connection
- bolt core
- bolt cropper
- bolt cutter
- bolt face
- bolt head
- bolt nut
- bolt shank
- bolt shear
- bolt square
- bolt-hole
- bolted connection
- bolted splice
- bolter
- bolting
- bolting cloth
- boltted union
- boltzmann constant
- bond
- bond strength
- bonded
- bonder
- bonding cement
- bonding material
- bone bed
- bone coal
- book
- book case
- book composition
- book label
- book profits
- bookbinding
- bookkeeping
- bookseller
- bookstall
- bookworm
- boolean function
- boolean logic
- boolean operator
- boom derrick
- boom equipment
- boom hoisting
- boom range
- boom sheet
- boon
- boost
- booster
- booster mill
- booster pump
- booster station
- booster transformer
- boosting battery
- boosting regulator
- boot block
- boot button
- boot chip
- boot disk
- boot partition
- boot sector
- boot virus
- booting
- bootjack
- bootleg
- bootstrap generator
- bootstrap program
- booze
- borax
- bord
- border dike
- border moraine
- border stone
- bordering
- bore
- bore bit
- bore hole
- bore holes
- bore mud
- bore well
- borebit
- bored pile
- borehammer
- borehole capacity
- borehole mouth
- borer
- boresighting
- boric oxide
- boring bar
- boring book
- boring contractor
- boring cutter
- boring head
- boring journal
- boring machine
- boring mill
- boring rig
- boring tool
- borings
- borocarbon resistor
- borrowing requirement
- boss