1. to break or fall apart into small pieces
2. to gradually lose strength, power, or effectiveness

1. a dessert made with fruit topped with a mixture of flour, butter, and sugar that is baked until it forms crumbs

Examples

• The old wall began to crumble after years of weathering.
• She watched the cookie crumble in her hands.
• The empire started to crumble from within.
• His confidence began to crumble under pressure.
• We had apple crumble for dessert.
• The ancient ruins continue to crumble over time.
• Her grandmother’s famous peach crumble was everyone’s favorite.