Definitions of demurrage
an amount of money payable by a person who charters (=rents) a ship, truck, etc. when it remains in the charterer's possession beyond the agreed transportation time
The arrival of the goods in port triggered demurrage charges.
the period in which a chartered ship or truck remains in the charterer's possession beyond the agreed transportation time
The ship owner was assured that the demurrage would only be 5 days.