surcharge

sur·charge

1. An additional sum added to the usual amount or cost.
2. An overcharge, especially when unlawful.
3. An additional or excessive burden; an overload.
4. a. A new value or denomination overprinted on a postage or revenue stamp.
   b. The stamp to which a new value has been applied.
5. Law The act of surcharging.

1. To charge (a person) an additional sum.
2. To overcharge (a person).
3. To place an excessive burden on; overload.
4. To fill beyond usual capacity; overfill.
5. To print a surcharge on (a postage or revenue stamp).
6. Law To show an omission of a credit in (an account).
7. To require (a person) to reimburse funds spent without authorization.

Origin: Middle English, from surchargen, to overtax, from Old French surcharger : sur-, sur- + chargier, to charge; see charge .