The World of Warcraft term COD can stand for one of two things. Most commonly it refers to Cash on Delivery, a means of paying for an item through mail. To send an item like this, select COD in the mailbox options and enter the amount of money that must be paid to you for the item to be retrieved. COD can also stand for Curse of Doom, a Warlock spell that deals a large amount of shadow damage 1 minute after being applied. The COD WoW term is pretty well known among almost all WoW players.