su ‧ per ‧ tank ‧ er /ˈsuːpəˌtæŋkə $ -pərˌtæŋkər/ BrE AmE noun [countable]
an extremely large ship that can carry large quantities of oil or other liquids
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THESAURUS
■ ships that carry goods
▪ cargo ship/merchant ship a ship that carries goods rather than people
▪ container ship a ship that carries goods in special containers which can be put on trucks
▪ freighter a large ship that carries goods
▪ oil tanker a ship that carries oil
▪ supertanker a very large ship that carries oil
▪ barge a ship that carries goods on a river or canal