collapse (тж. перен.)
(о крыше, потолке тж.) fall* in;
он ~л на землю как подкошенный he collapsed in a heap on the ground;
наши надежды ~ли our hopes were dashed to the ground
совер.; без доп. 1) crash down, tumble down, collapse
2) разг. fail; crash; be destroyed, fall to the ground; collapse, fall through; come to naught