grublet Share definition Flag A person who eats everything. Person 1: "Wow did you see that? He just ate two cakes, a bag of chips, some pie, and four hot dogs!" Person 2: "I know, he's a total grublet." grublet by kit6 February 5, 2009 0 0 Get merch Get the grublet mug. Buy Now — $32.95 See more merch