English to English
1. fall apart
the building crumbled after the explosion|Negotiations broke down
2. break or fall apart into fragments
The cookies crumbled|The Sphinx is crumbling
3. fall into decay or ruin
The unoccupied house started to decay
4. To break into small pieces; to cause to fall in pieces.
5. To fall into small pieces; to break or part into small fragments; hence, to fall to decay or ruin; to become disintegrated; to perish.