- a width, between the rails of a railroad, less than standard (56.5 in, or 143.5 cm)
- a narrow-gauge railroad or car
narrow gaugenarrow gauge
- A distance between the rails of a railroad track that is less than the standard width of 56.5 inches (143.5 centimeters).
- A locomotive, car, or railway line of this gauge.
- nar′row-gauge′ nar′row-gauged′
(plural narrow gauges)