cockin Share definition Flag This is frequently a short form of cockblocking. Cockblocking is when one goes all out to make sure a man (or a woman) does not get any action. Cam'ron - O.Jay-Z cockin is dead cockin by Philly Phiend July 27, 2007 0 0 Get merch Get the cockin mug. Buy Now — $32.95 See more merch