boil - brea
- bottom curent
- bottom dead centre
- bottom die
- bottom discharge
- bottom draw
- bottom dump
- bottom flange
- bottom gear
- bottom hole
- bottom land
- bottom layer
- bottom loading
- bottom note
- bottom pillar
- bottom plate
- bottom pouring
- bottom product
- bottom rule
- bottom runner
- bottom sill
- bottom surface
- bottom valve
- bottom-inloading
- bottom-loading face belt
- bottom-road bridge
- bottoming
- bottoming die
- bottoming reamer
- bottoming tap
- bottoms; bottom sediments / settlings
- boulder paving
- boulder stones
- boulder-rock
- boulder; bowlder
- boules
- boulevard
- bounce
- bound
- bound electricity
- bound energy
