grate in WordNet English dictionary

1. gnaw into; make resentful or angry
   "The injustice rankled her"; "his resentment festered"
   eat into  fret  rankle  grate 
   
2. make a grating or grinding sound by rubbing together
   "grate one's teeth in anger"
   grate  grind 
   
3. scratch repeatedly
   "The cat scraped at the armchair"
   scrape  grate 
   
4. reduce to small shreds or pulverize by rubbing against a rough or sharp perforated surface
   "grate carrots and onions"; "grate nutmeg"
   grate 
   
5. furnish with a grate
   "a grated fireplace"
   grate 
   

1. a frame of iron bars to hold a fire
   grate  grating 
   
2. a barrier that has parallel or crossed bars blocking a passage but admitting air
   grate  grating 
   
3. a harsh rasping sound made by scraping something
   grate