What does 'chargeoff' mean?

It is a term used by credit card companies to indicate they are ending attempts to collect the debt. Then they list it as a bad debt tax loss. This does not mean the account holder is "off the hook". More than likely the account will be bought for pennies on the dollar by a third party collector. The REAL collection process will start, which may, if the debt is not satisfied, culminate in a lawsuit.