gross ton

noun

1. Chiefly British. a long ton.See under ton¹(def 1).
2. Also called gross register ton. Nautical. See under gross tonnage.

noun Nautical.

1. the total volume of a vessel, expressed in units of 100 cubic feet (gross ton), with certain open structures, deckhouses, tanks, etc., exempted.

noun

1. a long tonSee ton 1 (def. 1)