Tonnage

Part of speech: noun (n.)

1. The weight of goods carried in a boat or a ship.

2. The cubical content or burden of a vessel, or vessels, in tons; or, the amount of weight which one or several vessels may carry. See Ton, n. (b). A fleet . . . with an aggregate tonnage of 60,000 seemed sufficient to conquer the world. Motley.

3. A duty or impost on vessels, estimated per ton, or, a duty, toll, or rate payable on goods per ton transported on canals .

4. The whole amount of shipping estimated by tons; as, the tonnage of the United States. See Ton.