1. a government building where customs duties are collected and where imported goods are inspected

Examples

• The ship’s cargo was inspected at the customhouse before being released.
• Merchants had to pay import taxes at the customhouse.
• The old customhouse near the harbor is now a museum.
• All foreign goods must pass through the customhouse.
• The customhouse officer examined our luggage carefully.
• Historical records were kept at the port’s customhouse.