1. To steal, to rip off. Chris, you jerk, don't be horking my fries. 2. To vomit (if human) or to have a total system failure (if computer). Don't know what was wrong with the code, but my server horked repeatedly. 3. The hacking sound made by an animal when in the process of expelling undigested dinner or fur. It was 2:30 am and I awoke to the sound of the cat horking in the living room.