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fall line Definition
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fall line
noun(fall line)a line joining the waterfalls on numerous rivers that marks the point where each river descends from the upland to the lowland and the limit of the navigability of each river
fall line
noun(fall line)the natural downhill course (as for skiing) between two points on a slope
fall line
verb(fall line)to descend freely by the force of gravity
fall line
verb(fall line)to hang freely
fall line
verb(fall line)to drop oneself to a lower position