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sea

 
 
/siː/ noun

Definition

[C, U] a large area of salt water: I'd like to live by the sea. We went swimming in the sea. It was our third day at sea (= travelling on the sea). It's cheaper to send parcels by sea (= on a ship).
Sea a particular area of salt water: the North Sea the Black Sea
a sea of sth a large number of something: He looked across the room and saw a sea of faces.
(Definition of sea noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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