1. to put someone in prison as punishment for a crime
2. to keep someone confined in a place against their will

Examples

• The judge decided to imprison the thief for two years.
• He was imprisoned for robbery and served his full sentence.
• The dictator imprisoned anyone who opposed his rule.
• She felt imprisoned by her fear of leaving the house.
• The avalanche imprisoned the hikers in their cabin for days.
• They imprisoned the spy in a maximum-security facility.
• His debts seemed to imprison him in a cycle of poverty.