the drainage basin of rivers flowing to the Pacific.
- 1852  It had not until lately crossed the Rocky Mountain range, nor is it known on the Pacific slope, except in a very few places.
- 1905  Over on the Pacific Slope, to say nothing of the cities across the line, you get a schooner of beer for a nickel, with a hot lunch thrown in.
- 1945  We were now on the Pacific Slope, rolling down to the sea.