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English definition of “prop”

prop

verb [T + adv/prep] uk   /prɒp/ us    /prɑːp/ (-pp-)
to support something physically, often by leaning it against something else or putting something under it: I propped my bike (up) against the wall. She was sitting at the desk with her chin propped on her hands. This window keeps on closing - I'll have to prop it open with something.
Phrasal verbs

prop

noun uk   /prɒp/ us    /prɑːp/

prop noun (IN FILM/THEATRE)

[C usually plural] an object used by the actors performing in a play or film: The set is minimal and the only props used in the show are a table, a chair and a glass of water.

prop noun (ON AIRCRAFT/SHIP)

[C] informal for propeller

prop noun (SUPPORT)

[C] an object that is used to support something by holding it up: I need some sort of a prop to keep the washing line up.figurative A lot of people use cigarettes as a sort of social prop (= to make them feel more confident). (also prop forward) a player in a rugby team who is large and strong, and who supports the scrum
(Definition of prop from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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