Tripoli /ˈtɹɪpəli/ noun3 •The capital city of Libya, originally three separate settlements known as Oea, Sabratha, and Leptis Magna.When he got to Zawiyah, the coastal town west of Tripoli that has become the main hub for the people-smuggling industry, he was kidnapped a second time and held in a tiny cell for six months. — 2020 •A city in Lebanon, originally jointly administered by the three cities of Tyre, Sidon, and Aradus. •A city in the Peloponnese region, Greece, also known as Tripolis.