Source : Webster's Revised Unabridged Dictionary (1913)

Erode \E*rode"\, v. t. (Geol. & Phys. Geog.)
   (a) To wear away; as, streams and glaciers erode the land.
   (b) To produce by erosion, or wearing away; as, glaciers
       erode U-shaped valleys.

Erode \E*rode"\, v. t. [imp. & p. p. {Eroded}; p. pr. & vb. n.
   {Eroding}.] [L. erodere, erosum; e out + rodere to gnaw. See
   {Rodent}.]
   To eat into or away; to corrode; as, canker erodes the flesh.
   ``The blood . . . erodes the vessels.'' --Wiseman.

         The smaller charge is more apt to . . . erode the gun.
                                                  --Am. Cyc.

Source : WordNet®

erode
     v 1: become ground down or deteriorate; "Her confidence eroded"
          [syn: {gnaw}, {gnaw at}, {eat at}, {wear away}]
     2: remove soil or rock; "Rain eroded the terraces" [syn: {eat
        away}, {fret}]