Cottoncooch Share definition Flag Noun; (1)slang for tampon. (2) or a word to describe a girl being a bitch. Dear Keira Knightley, stop pms-ing you cottoncooch. Cottoncooch by hubriftoden June 13, 2011 0 0 Get merch Get the Cottoncooch mug. Buy Now — $32.95 See more merch