| Noun | 1. | Thessaloniki - a port city in northeastern Greece on an inlet of the Aegean Sea; second largest city of Greececity, metropolis, urban center - a large and densely populated urban area; may include several independent administrative districts; "Ancient Troy was a great city" port - a place (seaport or airport) where people and merchandise can enter or leave a country Ellas, Greece, Hellenic Republic - a republic in southeastern Europe on the southern part of the Balkan peninsula; known for grapes and olives and olive oil | |