1. (

• erosion ,
• eroding ,
• eating_away ,
• wearing ,
• wearing_away

) (geology) the mechanical process of wearing or grinding something down (as by particles washing over it) ;

1. (

• erode ,
• gnaw ,
• gnaw_at ,
• eat_at ,
• wear_away

) become ground down or deteriorate; "Her confidence eroded" ;

2. (

• erode ,
• eat_away ,
• fret ,

) remove soil or rock; "Rain eroded the terraces" ;