1. Lack of Greek Heritage: This is the most straightforward meaning. It simply means someone is not of Greek descent.
2. Ignorance of the Greek Language: In this context, "no Greek" means someone doesn't understand or speak the Greek language.
3. Not Greek-Related: This can be used in a broader sense to refer to something that has no connection to Greece, its culture, or its history.
4. "No Greek" as a Slang Term: In some contexts, "no Greek" is used as slang to express a lack of understanding or confusion. This usage is not very common and can be considered informal.
It's important to understand the context to determine the intended meaning of "no Greek".
If you could provide more information about the situation where you heard this phrase, I might be able to give you a more specific answer.