Deep, narrow valley or gorge running through mountains. Canyons are formed by stream down-cutting, usually in arid areas, where the stream or river receives water from outside the area.
There are many canyons in the western US and in Mexico, for example the Grand Canyon of the Colorado River in Arizona, the canyon in Yellowstone National Park, and the Black Canyon in Colorado.(North America) A ravine formed by a river in an area with little rainfall; SYN. canon.

City in Texas (USA); zip code 79015.