- ball bearing
- belt
- cog
- combustion chamber
- conveyor belt
- coolant
- cooling system
- crank
- differential
- disengage
- dismantle
- drive
- four-stroke engine
- fuel cell
- fulcrum
- gear
- heat pump
- hydraulic
- inertia
- mechanic
- mechanical
- mechanical engineering
- mill
- millstone
- millwheel
- momentum
- motive
- neutral
- nuclear reactor
- oil pan
- pivot
- propulsion
- pulley
- pump
- race
- ratchet
- reactor
- regulate
- retract
- rev
- rev
- rotor
- selector
- starter motor
- stress
- stressed
- strip
- sump
- supercharged
- template
- top gear
- torque
- two-stroke
- universal joint
- valve
- wheel
- winch
- windlass
