Definition of: erode

(i·rōd′) v. e·rod·ed, e·rod·ing v.t.
1. To eat or wear into or away.
2. Geol. To wear down, as rocks, soil, etc., by the action of wind, water, and other agencies; also, to form, as a canyon, by such action.
—v.i.
3. To become eroded. [<L erodere <e- off + rodere gnaw]