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English definition of “rehash”

rehash

noun [C] uk   /ˈriː.hæʃ/ informal disapproving us  
writing or speech that uses old ideas as if they were new: His new book is just a rehash (of his previous ones).Saying againSaying and uttering
rehash
verb [T] uk   /ˌriːˈhæʃ/ us  
Some students merely rehash what they've heard in lectures.Saying againSaying and uttering
(Definition of rehash from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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