trunker Share definition Flag Any person with a disproportionately large ass (i.e., with junk in the trunk). "Sorry it took me so long to run to the store. There was this trunker in the cat food aisle and I just couldn't get around her!" trunker by scott5114 December 26, 2011 0 0 Get merch Get the trunker mug. Buy Now — $32.95 See more merch