Coast Mountains Definition

proper name
Mountain range in W British Columbia & S Alas.; N continuation of the Cascade Range: highest peak, 13,260 ft (4,042 m)
Webster's New World
A range of western British Columbia, Canada, and southeast Alaska extending about 1,600 km (1,000 mi) parallel to the Pacific coast. The mountains slope precipitously to the Pacific Ocean, where the shoreline is deeply indented by fjords. Mount Waddington, 4,019 m (13,186 ft), is the highest elevation in the range.
American Heritage