Source : Webster's Revised Unabridged Dictionary (1913)

Corrade \Cor*rade"\ (k?r-r?d"), v. t. [L. corradere, -rasum;
   cor- + radere to rub.]
   1. To gnaw into; to wear away; to fret; to consume. [Obs.]
      --Dr. R. Clerke.

   2. (Geol.) To erode, as the bed of a stream. See {Corrosion}.

Source : WordNet®

corrade
     v : wear away [syn: {abrade}, {abrase}, {rub down}, {rub off}]