engine house

noun4

1. •
   A building housing one or more engines.
2. •
   A building for housing a fire engine, a firehouse or fire station.
3. •
   A building for housing one or more locomotives, an engine shed.

   • Of locomotive interest was "an engine house for spare engines which was about 60 ft. × 51 ft.; on the outside of this was an immense turntable sufficient to turn the engine and tender at once." — 1944
4. •
   A building housing a stationary engine.