- 1the sea [uncountable] (literary seas [plural]) the salt water that covers most of the earth's surface and surrounds its continents and islands to travel by 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 a sea view see high seas, ocean
- 2[countable] (often Sea, especially as part of a name) a large area of salt water that is part of an ocean or surrounded by land the North Sea the Caspian Sea
- 3[countable] seas [plural] the movement of the waves of the ocean It was a calm sea. The sea was very rough.
- 4[singular] sea of something a large amount of something that stretches over a wide area He looked down at the sea of smiling faces before him. Idioms
- 1on the ocean, especially in a ship, or in the ocean It happened on the second night at sea. They were lost at sea.
- 2confused and not knowing what to do I'm all at sea with these new regulations.
in a difficult situation where there are two equally unpleasant or unacceptable choices
to become a sailor
far away from land where the ocean is deepest She fell overboard and was swept out to sea.
to leave a port or harbor by ship or boat
there are many other people or things that are as good as the one someone has failed to get
Check pronunciation: sea