collapses

n an abrupt failure of function or complete physical exhaustion n a natural event caused by something suddenly falling down or caving in n the act of throwing yourself down n a sudden large decline of business or the prices of stocks (especially one that causes additional failures) v break down, literally or metaphorically v collapse due to fatigue, an illness, or a sudden attack v fold or close up v fall apart v cause to burst v suffer a nervous breakdown v lose significance, effectiveness, or value