Meaning of STEAM ENGINE in English

STEAM ENGINE

noun

1. : an engine driven or worked by steam ; specifically : a reciprocating engine consisting essentially of a piston driven in a closed cylinder by steam at a pressure initially much greater than that of the atmosphere and usually connected rigidly by a piston rod to a crosshead whose reciprocating motion is usually converted into rotary motion by a connecting rod, crankpin, crank, and crankshaft — compare steam turbine

2. : locomotive

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.