piston

noun 0.811

reciprocating engine

noun 0.794

two-stroke engine

noun 0.746

internal combustion engine

noun 0.736

combustion engine

noun 0.734

jet engine

noun 0.721

piston valve

noun 0.720

rotary engine

noun 0.702

air engine

noun 0.689

piston ring

noun 0.679

steam engine

noun 0.674

heat engine

noun 0.666

stationary engine

noun 0.664

ion engine

noun 0.656

piston rod

noun 0.643

two-stroke

noun 0.641

engine

noun 0.640

rocket engine

noun 0.635

internal combustion

noun 0.627

traction engine

noun 0.605

engine block

noun 0.600

engine trouble

noun 0.574

turbojet

noun 0.569

electric motor

noun 0.556

cylinder head

noun 0.553

outboard motor

noun 0.545

pistol

noun 0.544

crankshaft

noun 0.543

rocket motor

noun 0.539

turbine

noun 0.539

diesel generator

noun 0.538

turboprop

noun 0.537

engine room

noun 0.536

propeller

noun 0.536

donkey engine

noun 0.535

fire engine

noun 0.534

steam turbine

noun 0.531

diesel

noun 0.530

air compressor

noun 0.529

turbofan

noun 0.527

combustion chamber

noun 0.526

microengine

noun 0.524

database engine

noun 0.523

turbomachine

noun 0.522

turbocharger

noun 0.522

positive displacement pump

noun 0.522

exhaust valve

noun 0.519

air pump

noun 0.518

engine oil

noun 0.518

pump

noun 0.517

steam locomotive

noun 0.517

engine displacement

noun 0.516

pushrod

noun 0.515

motor car

noun 0.513

siege engine

noun 0.512

starter motor

noun 0.511

engineman

noun 0.508

crankcase

noun 0.507

engine driver

noun 0.506

combustor

noun 0.506

oil burner

noun 0.506

steam boiler

noun 0.505

motor

noun 0.505

air pistol

noun 0.504

valve train

noun 0.504

motorcycle

noun 0.504

reciprocator

noun 0.503

camshaft

noun 0.502

search engine

noun 0.502

pneumatic

noun 0.501

compressor

noun 0.500