gronk /gronk/ , vt. [popularized by Johnny Hart's comic strip B.C.: but the word apparently predates that] 1. To clear the state of a wedged device and restart it. More severe than to frob (sense 2). 2. [TMRC] To cut, sever, smash, or similarly disable. 3. The sound made by many 3.5-inch diskette drives. In particular, the microfloppies on a Commodore Amiga go grink, gronk.