Definitions for "Columbia River"
a North American river; rises in southwestern Canada and flows southward across Washington to form the border between Washington and Oregon before emptying into the Pacific; known for its salmon runs in the spring
a river that flows from Idaho to northwestern Washington, down through central Washington, and along the Washington-Oregon border to the Pacific Ocean (write it on the map in two different places).
Flows from British Columbia, Canada south through the State of Washington until turning west to the Pacific Ocean at the Oregon border.