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English definition of “knock sth off (sth)”

knock sth off (sth)

informal phrasal verb with knock     /nɒk/ US  /nɑːk/ verb
to take a particular amount away from a price: The manager knocked £5 off because it was damaged.Value and price decreases
(Definition of knock sth off (sth) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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