'Corrade' definitions:
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Corrade \Cor*rade"\ (k?r-r?d"), v. t. [L. corradere, -rasum;
cor- + radere to rub.]
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1. To gnaw into; to wear away; to fret; to consume. [Obs.]
--Dr. R. Clerke.
[1913 Webster]
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2. (Geol.) To erode, as the bed of a stream. See Corrosion.
[1913 Webster]