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1. (geology) the mechanical process of wearing or grinding something down (as by particles washing over it), also figuratively
   - erosion, eating away, wearing, wearing away, degradation

1. Become ground down or deteriorate
   "Her confidence eroded";
   - gnaw, gnaw at, eat at, wear away
    
2. Remove soil or rock
   "Rain eroded the terraces";
   - eat away, fret

Type of: crumble, damage, decay, dilapidate, geologic process, geological process

Encyclopedia: Erode, Tamil Nadu