Yes, grate is a Scrabble word!

Verb

1. Furnish with a grate

2. Gnaw into; make resentful or angry

3. Reduce to small shreds or pulverize by rubbing against a rough or sharp perforated surface

4. Make a grating or grinding sound by rubbing together

5. Scratch repeatedly

Noun

1. A frame of iron bars to hold a fire

2. A harsh rasping sound made by scraping something

3. A barrier that has parallel or crossed bars blocking a passage but admitting air