Flacker Share definition Flag Gluten free multigrain cracker. From the Greco romain word flackus which means to vomit after a small meal. "Those flackers aren't actually edible", exclaimed Jon as he spits out his bourbon. Flacker by Papabear November 12, 2016 0 0 Get merch Get the Flacker mug. Buy Now — $32.95 See more merch