verb
When he opened the valve, the balloon collapsed. Hundreds of buildings collapsed in the earthquake
After the imprisonment of their leader, the entire movement collapsed. Owing to the recession, many businesses collapsed
He collapsed on-stage and they took him to his dressing-room
She finally collapsed from overwork and is now in a sanatorium
noun
The collapse of the house was attributed to termites
Will he be able to survive the collapse of his financial empire?
He suffered a mental collapse when his family was killed in a car crash
US