Gabuttload Share definition Flag 1) A large quantity. 2) Referring to a woman's ample derriere. 1) My parents just sent me a gabuttload of money! 2) Dang! That girl's got one nice gatbuttload! Gabuttload by TMOE12345 February 21, 2009 0 0 Get merch Get the Gabuttload mug. Buy Now — $32.95 See more merch