Meaning of COLLAPSE in English

COLLAPSE

■ verb

1》 (of a structure) suddenly fall down or give way.

↘[usu. as adjective ~d ] (of a lung or blood vessel) fall inwards and become flat and empty.

2》 fall down as a result of illness or injury.

3》 fail suddenly and completely.

■ noun

1》 an instance of a structure collapsing.

2》 a sudden failure or breakdown.

Origin

C17: from medical L. collaps- , collabi , from col- 'together' + labi 'to slip'.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.