The act of obtaining someone else's credit card information, by either trashing
which hardly works anymore, or hacking an online store, or simply looking at someone else's card and writing down it's number and exp. date. Once the card info is obtained the person doing the carding will usually have a drop point (an empty house or building) and have the items ordered with the credit card shipped there to make the whole act pretty untraceable.
I'm carding a phat new laptop computer.