grate 1 (grt)
v. grat·ed, grat·ing, grates
v.tr.
1. To reduce to fragments, shreds, or powder by rubbing against an abrasive surface.
2. To cause to make a harsh grinding or rasping sound through friction: grated her teeth in anger.
3. To irritate or annoy persistently.
4. Archaic To rub or wear away.
great (grt)
adj. great·er, great·est
1. Very large in size.
2. Larger in size than others of the same kind.
3. Large in quantity or number: A great throng awaited us. See Synonyms at large.
4. Extensive in time or distance: a great delay.
5. Remarkable or outstanding in magnitude, degree, or extent: a great crisis.
6. Of outstanding significance or importance: a great work of art.
7. Chief or principal: the great house on the estate.
8. Superior in quality or character; noble: "For he was great, ere fortune made him so" (John Dryden).
9. Powerful; influential: one of the great nations of the West.
10. Eminent; distinguished: a great leader.
11. Grand; aristocratic.
12. Informal Enthusiastic: a great lover of music.
13. Informal Very skillful: great at algebra.
14. Informal Very good; first-rate: We had a great time at the dance.
I think is what Gaz maybe pointing out