Definition of "ridgeline"

A ridgeline is a long area from which the surface drops away steeply on one or two sides, such as a bluff or precipice.

a. 2007, Federal Aviation Administration, Rotorcraft Flying Handbook, Skyhorse Publishing, 2007, p. 10-8

As the trail flattens out, it follows the draw up right to a saddle in the ridgeline.

1999, Stewart M. Green, Rock Climbing Arizona‎, Globe Pequot, page 77

Surface runoff from ridgeline development can contaminate rivers and streams that supply drinking water downstream.

2003, John R. Nolon, Open Ground: Effective Local Strategies for Protecting Natural Resources‎, Environmental Law Institute, page 29

These ridgelines and hilltops are exceptional aesthetic and ecological resources, visible from many perspectives and distances.

a. 2003, Zoning regulations of the Town of Clinton, New York, §2.5, cited in

Standing atop the ridgeline, King Edward watched the nightmare scenario he himself had predicted.

2005, Margaret Weis, chapter 34, in Master of Dragons‎, Macmillan