A port that is designated under a treaty to allow foreign trade and residence.

संधि बंदरगाह

English Usage: "The city became a treaty port in the 19th century, opening up trade with foreign nations."

Hindi Usage: "यह शहर 19वीं सदी में एक संधि बंदरगाह बन गया, जिससे विदेशी राष्ट्रों के साथ व्यापार खुल गया।"