1 definition by Nanaki001
Grunny (NOUN) - A fictional animal on GaiaOnline.com. Name is a combination of "Green" and "bunny" which describes the grunny's appearence. Grunnies carry a poison that, when injected into humans through a bite, can make them into Grunny Zombies (Grombies)
by Nanaki001 November 10, 2006