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English definition of “sea”

sea

noun
 
 
/siː/
A1 [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).Seas and oceans
Sea A1 a particular area of salt water: the North Sea the Black SeaSeas and oceans
a sea of sth a large number of something: He looked across the room and saw a sea of faces.Large in number or quantity
(Definition of sea from the Cambridge Learners Dictionary © Cambridge University Press)
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