nub rub Share definition Flag When a woman rubs her clit on a man's (or woman's) nipple to achieve orgasm. I did everything to this chick, but the only way she would get off was with a "nub rub!" nub rub by Crickett6969 February 11, 2008 0 0 Get merch Get the nub rub mug. Buy Now — $32.95 See more merch