footwall

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noun foot·wall \ˈfu̇t-ˌwȯl\

Definition of footwall

  1. 1 :  the lower underlying wall of a vein, ore deposit, or coal seam in a mine

  2. 2 :  the lower wall of an inclined fault

1837

First Known Use of footwall

1837


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a dividing ridge between drainage areas

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