Definition

1. Noun:
   • A steam locomotive that carries its own fuel and water supply in onboard tanks, eliminating the need for a separate tender car. This design integrates the water and coal (or other fuel) storage directly onto the locomotive's frame, making it more compact and suitable for shorter runs or routes with frequent reversals.

Usage

• The term "tank locomotive" is used to describe a specific type of steam engine, distinguishing it from "tender locomotives." It is often used in historical, technical, and railway enthusiast contexts.
• Example:
• Example:

Advanced Usage

• "Tank engine": A common, informal synonym for "tank locomotive."
  • The famous fictional character Thomas is a tank engine.
• The design is often specified by tank arrangement (e.g., "saddle tank," "side tank," "pannier tank").
  • The pannier tank locomotive was a distinctive design used by the Great Western Railway.

Variants and Related Words

• Tank engine (n): Synonym for tank locomotive.
• Tender locomotive (n): A steam locomotive that hauls its fuel and water in a separate car (the tender).
• Saddle tank (n): A type of tank locomotive where the water tank sits atop the boiler like a saddle.
• Side tank (n): A type where water tanks are mounted on the sides of the boiler.

Synonyms

• Tank engine: The most direct synonym.
• Steam motor (less common): Occasionally used, especially for very small industrial locomotives.

Related Phrases/Idioms

• (This specific technical term is not commonly used in idiomatic expressions. Its usage is largely literal and descriptive within its domain.)

Noun

1. a locomotive that carries its own fuel and water; no tender is needed