* It's a misspelling: Could you be thinking of a similar-sounding word? Perhaps you could provide more context.
* It's a dialectal word: Greek has many dialects, and a word might exist in a regional dialect that isn't widely known.
* It's a loanword: The word might be borrowed from another language and used informally in Greece.
* It's a made-up word: It might be a fictional word created for a specific purpose.
To help me understand what you mean, please provide more details about where you encountered this word.