weight in tons, especially of cargo or freight:road convoys carry more tonnage
the size or carrying capacity of a ship measured in tons:a galleon of greater tonnage than any ship Kit had sailed [count noun]:a ship with a gross tonnage of 552
shipping considered in terms of total carrying capacity:the European Community’s total tonnage
Origin:
early 17th century (denoting a charge per ton on cargo): from ton1+ -age
tonnage in other Oxford dictionaries
Definition of tonnage in the US English dictionary
