n. In maritime law:n. Any detention of a vessel by the freighter in loading or unloading beyond the time originally stipulated. When a vessel is thus detained she is said to be on demurrage.n. The compensation which the freighter has to pay for such delay or detention.n. Detention of railway-wagons, etc.n. A charge of 1½d. per ounce, made by the Bank of England in exchanging notes or coin for bullion.