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cave in

(FALL) phrasal verb with cave
 
 
/keɪv/ verb

Definition

If a ceiling, roof, or other structure caves in, it breaks and falls into the space below: Because of the explosion, the roof of the building caved in, trapping several people.Destroying and demolishingDamaging and spoiling
(Definition of cave in (FALL) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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