broad gauge

1. A distance between the rails of a railroad track that is greater than the standard width of 56 ¹/₂ inches (143.5 centimeters).
2. A locomotive, car, or railway line of this gauge.

(brôdˈgājˌ)

1. Having a broad gauge. Used of a railroad track.
2. Informal Having a wide scope: broad-gauge criticism.