Definition of "Grate" :
noun: a frame of iron bars to hold a fire
noun: a barrier that has parallel or crossed bars blocking a passage but admitting air
noun: a harsh rasping sound made by scraping something
verb: scratch repeatedly
verb: make a grating or grinding sound by rubbing together
"Grate one's teeth in anger."
verb: reduce to small shreds or pulverize by rubbing against a rough or sharp perforated surface
"Grate carrots and onions."
verb: gnaw into; make resentful or angry
verb: furnish with a grate
"A grated fireplace."