ध्वस्त होना।

भूकंप में राम का मकान ढह गया।
गिर पड़ना, गिरना, ढहना

Break down, literally or metaphorically.

The wall collapsed.
The business collapsed.
The dam broke.
The roof collapsed.
The wall gave in.
The roof finally gave under the weight of the ice.
break, cave in, collapse, fall in, founder, give, give way