A term derived from the last name of hockey player Sidney (Cindy) Crosby. This term is synonymous with crybaby, whiner, or anything describing one who complains about any little grievance, whether worthy or not.
Dude Tim was being such a Crosbaby when i told him we couldn't pick him up at his cousin's last night!
Pro basketball players need to stop being such Crosbabies about getting fouled. Man up and play ball.