Meaning of “ream sb (out)” in the English Dictionary

british dictionary

"ream sb (out)" in British English

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ream sb (out)

US slang
phrasal verb with ream uk /riːm/ us /riːm/ verb

to tell someone off severely because you strongly disapprove of their behaviour:

The boss reamed them out for sleeping on the job.

(Definition of “ream sb (out)” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)