Erode

Webster's Dictionary of the English Language

·add. ·vt To wear away; as, streams and glaciers erode the land.

II. Erode ·vt To eat into or away; to Corrode; as, canker erodes the flesh.

III. Erode ·add. ·vt To produce by erosion, or wearing away; as, glaciers erode U-shaped valleys.