Learn how to say Collapsed correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word collapse:
(intransitive) to fall down or cave in suddenly ⇒ the whole building collapsed
(intransitive) to fail completely ⇒ his story collapsed on investigation
(intransitive) to break down or fall down from lack of strength
to fold (furniture, etc) compactly or (of furniture, etc) to be designed to fold compactly
the act or instance of suddenly falling down, caving in, or crumbling
a sudden failure or breakdown