tank engine

Self-contained train motor

A tank engine is a steam locomotive that carries its own water and fuel in tanks mounted on the engine frame, rather than in a separate tender car pulled behind.

Tank engines are typically smaller and used for shorter runs or shunting work: The branch line was served by a little tank engine.

Thomas the Tank Engine popularized the term for generations of children.

Family

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Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G