| Noun | 1. | Gansu - a province in north-central China; formerly part of the Silk Road to Turkistan and India and Persiaprovince, state - the territory occupied by one of the constituent administrative districts of a nation; "his state is in the deep south" Silk Road - an ancient trade route between China and the Mediterranean (4,000 miles); followed by Marco Polo in the 13th century to reach Cathay | |