muckcow Share definition Flag A dirty ,skanky,dead set ugly swampdonkey like girl. Tim: I cant belive matt,s goin out wid that muckcow,what is he thinkin"? luke: i have no idea man ,he must be desperate! muckcow by mcoote May 30, 2007 0 0 Get merch Get the muckcow mug. Buy Now — $32.95 See more merch