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1. To make a harsh sound by friction. I had rather hear a brazen canstick turned, or a dry wheel grate on the exletree. (Shak)

2. To produce the effect of rubbing with a hard rough material; to cause wearing, tearing, or bruising. Hence; to produce exasperation, soreness, or grief; to offend by oppression or importunity. This grated harder upon the hearts of men. (South) p. 647 this page badly done in need of careful proofing