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fall line

noun

Definition of fall line

  1. 1 :  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

  2. 2 :  the natural downhill course (as for skiing) between two points on a slope

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First Known Use of fall line

1882

Learn More about fall line

  1. See words that rhyme with fall line Britannica.com: Encyclopedia article about fall line

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