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supergrass

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supergrass /ˈsuːpɚˌgræs/ Brit /ˈsuːpəˌgrɑːs/ noun

plural supergrasses

supergrass

/ˈsuːpɚˌgræs/ Brit /ˈsuːpəˌgrɑːs/

noun

plural supergrasses

Learner's definition of SUPERGRASS

[count] British, informal

: a criminal who gives information to the police about a large number of other criminals

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