Originally: a customary payment to the master and crew of a ship for loading and taking care of the cargo. In later use also: a percentage added to a freight charge to cover the cost of loading or unloading a ship.
A duty paid to the local Trinity House society on goods brought into a particular port, especially Newcastle-upon-Tyne.
An additional or special customs duty on imported goods.
Water present as droplets suspended in the steam from a boiler; the amount of this.