Meaning

2 senses
  1. An engine that has only a single stage, contrasting to a compound engine, compound locomotive, or triple expansion engine, which use multiple stages to improve efficiency.

  2. A steam engine that does not use a separate condenser to create suction and thereby improve efficiency.

Forms

plural: simple engines
Singularsimple engine
Pluralsimple engines

regular

See also

neighbours in the dictionary
simple engine — meaning, examples, forms, synonyms | Krumeto