demurrage

noun Commerce.

1. the detention in port of a vessel by the shipowner, as in loading or unloading, beyond the time allowed or agreed upon.
2. the similar undue detention of a railroad car, truck, etc.
3. a charge for such undue detention.

noun

1. the delaying of a ship, railway wagon, etc, caused by the charterer’s failure to load, unload, etc, before the time of scheduled departure
2. the extra charge required as compensation for such delay
3. a fee charged by the Bank of England for changing bullion into notes

n.

1640s, from Old French demorage, from demorer (see demur).