Poormark Share definition Flag A name for the clothing store Primark. So-called because of the cheap quality of the clothes, and the financial status and looks of the teenage mothers that shop there. Where did you buy that hideous t-shirt? Poormark? Poormark by Muto October 12, 2010 0 0 Get merch Get the Poormark mug. Buy Now — $32.95 See more merch