Definitions for fall line
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Random House Webster's College Dictionary
fall′ line`(n.)
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.
Category: Geography (places)
Skiing. the path of natural descent from one point on a slope to another.
Category: Sport
Origin of fall line:
1880–85
Wiktionary
fall line(Noun)
A line marking a boundary between an upland region and a plane; sometimes marked by a series of waterfalls on rivers that cross it.
fall line(Noun)
The imaginary line downhill that something falling downhill would naturally follow.
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