~ 1
■ verb
1》 reduce (food) to small shreds by rubbing it on a ~r.
2》 make an unpleasant rasping sound.
3》 (often ~ on ) have an irritating effect.
Origin
ME: from OFr. ~r , of Gmc origin.
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~ 2
■ noun the recess of a fireplace or furnace.
↘a metal frame for holding fuel in a fireplace or furnace.
Origin
ME (meaning 'a grating'): from OFr., based on L. cratis 'hurdle'.