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English definition of “prop sth up”

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prop sth up

verb [T + adv/prep] uk phrasal verb with prop   /prɒp/ us    /prɑːp/ (-pp-)
to lift and give support to something by putting something under it: He was sitting upright in his hospital bed, propped up by pillows. There were the usual bunch of drinkers propped up at (= leaning against) the bar. to give support to something, especially a country or organization, so that it can continue to exist in a difficult situation: How long is the government likely to survive without the US military force there to prop it up?
(Definition of prop sth up from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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