gearing,
geartrain,
power train,
gear,
train wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed; "the fool got his tie caught in the geartrain"
generator engine that converts mechanical energy into electrical energy by electromagnetic induction
heat engine any engine that makes use of heat to do work
engine -
an instrument or machine that is used in warfare, such as a battering ram, catapult, artillery piece, etc.; "medieval engines of war"
instrument the means whereby some act is accomplished; "my greed was the instrument of my destruction"; "science has given us new tools to fight disease"
battering ram a ram used to break down doors of fortified buildings
engine -
something used to achieve a purpose; "an engine of change"
engine -
a wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks
railroad train,
train public transport provided by a line of railway cars coupled together and drawn by a locomotive; "express trains don't stop at Princeton Junction"
cowcatcher,
fender,
pilot,
buffer a barrier that surrounds the wheels of a vehicle to block splashing water or mud; "in Britain they call a fender a wing"
footplate the platform in the cab of a locomotive on which the engineer stands to operate the controls
iron horse (c. 1840) an early term for a locomotive
pilot engine a locomotive that precedes a train to check the track
shunter a small locomotive used to move cars around but not to make trips
An engine (or motor) is a machine designed to convert energy into useful mechanical motion. Engines come in many types, a common type is a heat engine such as an internal combustion engine which typically burns a fuel with air and uses the hot gases for generating power. External combustion engines such as steam engines use heat to generate motion via a separate working fluid.
