traction engine(n = noun.artifact) - steam-powered locomotive for drawing heavy loads along surfaces other than tracks;
is a kind of engine, locomotive, locomotive engine, railway locomotive
air engine, aircraft engine, automobile engine, auxiliary engine, bogie engine, diesel engine, donkey engine, engine, engine block, engine cooling system, engine driver, engine failure, engine room, epitrochoidal engine, external-combustion engine, fanjet engine, fire engine, four-stroke engine, four-stroke internal-combustion engine, gas engine, gasolene engine, gasoline engine, heat engine, internal-combustion engine, ion engine, jet engine, locomotive engine, otto engine, pilot engine, radial engine, radiant engine, ramjet engine, reaction engine, reaction-propulsion engine, reciprocating engine, rocket engine, rotary engine, search engine, semiradial engine, steam engine, switch engine, tandem engine, tank engine, traction, traction wheel, trunk engine, turbofan engine, turbojet engine, valve-in-head engine, wankel engine, wankel rotary engine, water engine