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English definition of “jack sth up”

jack sth up

verb uk phrasal verb with jack   /dʒæk/ us  

(LIFT)

to raise a heavy object such as a car off the ground with a jack

(INCREASE)

informal disapproving to increase the price of something suddenly and by a large amount: Once the tourists arrive, the restaurants jack up their prices.
(Definition of jack sth up from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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