1. the remains of a building or place that has been badly damaged or destroyed
Usage: plural form
2. the state of being destroyed or severely damaged
Usage: often used with ‘in’

1. destroys or severely damages something
Usage: third person singular present
2. causes someone to lose their money, reputation, or prospects
Usage: third person singular present

Examples

• The ancient ruins attracted thousands of tourists each year.
• After the earthquake, the city lay in ruins.
• Archaeologists explored the Roman ruins in the countryside.
• The scandal ruins his political career.
• Poor planning ruins many business ventures.
• The castle ruins stood majestically on the hilltop.
• Gambling ruins families and destroys lives.