Also found in: Encyclopedia, Wikipedia.
1. The steepest possible line of descent from a given point on a slope.
2. A line connecting the waterfalls of upland rivers before they reach a common coastal plain, often marking the limit of upstream navigation and indicating a zone of potential water power for industrial purposes.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. (Skiing) skiing the natural downward course between two points on a slope
2. (Physical Geography) the edge of a plateau
(Placename) a natural junction, running parallel to the E coast of the US, between the hard rocks of the Appalachians and the softer coastal plain, along which rivers form falls and rapids
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
1. the natural boundary between an upland and a lowland, as a piedmont and a coastal plain: marked, in temperate or humid areas, by waterfalls and rapids.
2. Skiing. the path of natural descent from one point on a slope to another.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Most direct route to the bottom of a slope.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited