One who, or that which cards wool flax, etc.
A person who engages in online credit card fraud. Specifically, a carder steals credit card numbers, either to purchase merchandise (often computer-related) from Web-based stores or to trade the stolen numbers with like-minded individuals—again, over the Internet. Carders generally obtain credit card numbers through conventional means, such as “trashing” (searching through trash) or calling individuals and posing as bank officers. See also hacker (definition 2).