Fall-line definition
The steepest possible line of descent from a given point on a slope.
noun
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.
noun
The geographical line indicating the beginning of a plateau, usually marked by many waterfalls and rapids.
noun
(skiing) The line of direct descent down a hill.
noun
The line east of the Appalachian Mountains, marking the end of the coastal plains and the beginning of the Piedmont Plateau.
proper name
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A line connecting the waterfalls of nearly parallel rivers that marks a drop in land level.
(geomorphology) A geomorphologic unconformity marking a boundary between an upland region and a plane; sometimes marked by a series of waterfalls on rivers that cross it.
noun
(snowboarding) The imaginary line downhill that something falling downhill would naturally follow.
noun
Other Word Forms
Noun
Singular:
fall-line
Plural:
fall-lines