sea noun definition in Travelling by boat or ship topic from the Oxford Advanced Learner's Dictionary

sea

 noun: Travelling by boat or ship topic
(also the sea) [uncountable] (literary seas [plural]) (especially British English) the salt water that covers most of the earth’s surface and surrounds its continents and islands to travel by sea a cottage by the sea The waste was dumped in the sea. The wreck is lying at the bottom of the sea. We left port and headed for the open sea (= far away from land). the cold seas of the Arctic a sea voyage a hotel room with sea view

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