1. Worn by rubbing or friction
   "The attrited surface of the old stone steps showed years of use"

1. Gradually wear out, weaken or erode by a repeated action or ongoing process
   "The constant waves slowly attrited the coastal cliffs";
   - attrit
    
2. (military) weaken or wear down by sustained attack; kill or destroy
   "The enemy forces were attrited by continuous bombardment";
   - attrit

See also: worn