Could you please provide more context or clarify what you are looking for? For example:
* Did you misspell a word? If so, what was the intended word?
* Is this from a specific book, movie, or game? Knowing the source can help me identify the meaning.
* What is the overall context of the phrase? This will help me understand the intended message.
Once I have more information, I can help you understand what "ebart thon" might mean.