Related Clues:
- Soldiers to yield or retreat
- Eat dirt?
- Ebb, retreat
- Start to crumble? Not entirely 'zero defects'
- I hesitate to say some poetic lines are wearing
- Retreat (like hair?)
- Slowly undermine
- Gradually break down
- Diminish gradually, as a rocky cliff
- Take the edge off, say
- Wear with time
- Grind away before sealing arrangement with bank?
- Wear down staff in middle of week
- Ebb, go backwards
- Grind away in bar in central Greece?