Definition of in steam in English:

phrase

• (of a steam locomotive) ready for work, with steam in the boiler.

  ‘both of the engines were recently in steam’

  More example sentences

  • ‘The heritage railway, which runs from Toddington to Cheltenham Racecourse, will have five Swindon-built locomotives in steam on Friday, Saturday and Sunday.’
  • ‘Machine power, manifested in steam, internal combustion, and jet engines, provides strategic and tactical mobility and logistic lift to armed forces.’