noun
- an ancient Greek city on the Bosporus and the Sea of Marmara: Constantine I rebuilt it and renamed it Constantinople a.d.
noun
- an ancient Greek city on the Bosporus: founded about 660 bc; rebuilt by Constantine I in 330 ad and called Constantinople; present-day Istanbul
said to be named for its 7c. B.C.E. Greek founder, Byzas of Megara.