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English definition of “seal”

seal

noun [C]     /siːl/
ANIMAL B2 an animal with smooth fur that eats fish and lives near the sea Marine mammals
ON A CONTAINER a piece of paper or plastic on a container that you break in order to open itClosing and blocking
OFFICIAL MARK an official mark made of wax , paper , or metal that is put on important documents Official documents
STOP LIQUID/AIR an object or substance that stops liquid or air from leaving or entering a container Closing and blocking
(Definition of seal noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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