shield [countable]
1
a) a large piece of metal or leather that soldiers used in the past to protect themselves when fighting
b) a piece of equipment made of strong plastic, used by the police to protect themselves against angry crowds [= riot shield]
➔ human shield
2
a) something in the shape of a shield, wide at the top and curving to a point at the bottom, that is given as a prize for winning a competition, especially a sports competition
b) a drawing or model of a shield, wide at the top and curving to a point at the bottom, that is used as a coat of arms
3 something that protects a person or thing from harm or damage
shield against
The immune system is our body's shield against infection.
4 American English the small piece of metal that a police officer wears to show that they are a police officer [= badge]
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.
Advanced Learner's Dictionary.
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