- a width, between the rails of a railroad, less than standard (56.5 in, or 143.5 cm)
- ☆ a narrow-gauge railroad or car
See narrow gauge in American Heritage Dictionary 4
- A distance between the rails of a railroad track that is less than the standard width of 56 1/2 inches (143.5 centimeters).
- A locomotive, car, or railway line of this gauge.
- narˈrow-gaugeˌ (nărˈō-gājˌ), narˈrow-gaugedˌ (-gājdˌ) adjective
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