grepsti

1. to scratch
   Mačka stalno grebe kauč. — The cat keeps scratching the sofa.
   Nemoj da grebeš sto nožem! — Don't scratch the table with the knife!
2. to scrape
   Svako jutro grebem led sa stakla. — Every morning I scrape the ice off the windshield.
3. (of the throat) to feel scratchy
   Grebe me u grlu od jutros. — My throat has been scratchy since this morning.

In the throat sense it is used impersonally: grebe me u grlu.