tonnage

1. The number of tons of water that a floating ship displaces. (countable, uncountable)
2. The capacity of a ship's hold etc in units of 100 cubic feet. (countable, uncountable)
3. The number of tons of bombs dropped in a particular region over a particular period of time. (countable, uncountable)
4. A charge made on each ton of cargo when landed etc. (countable, uncountable)
5. The total shipping of a fleet or nation. (countable, uncountable)
6. A weight in tons, especially of cargo or freight. (countable, uncountable)

Plural tonnages