What is the greek word for restaurant?

There isn't a single, perfect Greek word for "restaurant" in the way that there is in English. The word used depends on the context. Common options include:

* εστιατόριο (estiatório): This is the most common and widely understood word for "restaurant."

* τρατορία (tratoria): This word is often used for smaller, more casual restaurants, sometimes implying a family-style or traditional Greek setting. It's of Italian origin but widely used and understood in Greece.

So, while εστιατόριο is the closest single equivalent, τρατορία offers a more nuanced meaning.