Meaning of “rehash” in the English Dictionary

"rehash" in British English

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rehashnoun [ C ]

uk /ˈriː.hæʃ/ us /ˈriː.hæʃ/ informal disapproving

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

"rehash" in American English

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rehashverb [ T ]

us /riˈhæʃ/

to present something old in a new way or form without any real change or improvement:

The kids keep rehashing the same old argument about whose turn it is.
noun [ C ] us /ˈriˌhæʃ/

The new season’s fashions seem like a rehash of last year’s.

(Definition of “rehash” from the Cambridge Academic Content Dictionary © Cambridge University Press)