piston engine

noun 0.794

reciprocator

noun 0.723

rotary engine

noun 0.700

two-stroke engine

noun 0.699

internal combustion engine

noun 0.698

stationary engine

noun 0.693

combustion engine

noun 0.683

heat engine

noun 0.679

air engine

noun 0.648

steam engine

noun 0.648

traction engine

noun 0.615

jet engine

noun 0.609

ion engine

noun 0.609

rocket engine

noun 0.603

internal combustion

noun 0.598

two-stroke

noun 0.595

piston

noun 0.593

engine

noun 0.591

positive displacement pump

noun 0.553

crankshaft

noun 0.545

piston valve

noun 0.542

engine block

noun 0.542

reaction turbine

noun 0.540

diesel generator

noun 0.537

engine room

noun 0.534

donkey engine

noun 0.533

reciprocation

noun 0.528

rocket motor

noun 0.527

steam turbine

noun 0.524

piston ring

noun 0.522

reciprocal

noun 0.520

steam locomotive

noun 0.519

outboard motor

noun 0.516

electric motor

noun 0.515

engineman

noun 0.512

hand crank

noun 0.512

piston rod

noun 0.508

crankcase

noun 0.508

steam boiler

noun 0.505

locomotive

noun 0.504

turbomachine

noun 0.504

engine trouble

noun 0.501

turbine

noun 0.500