sebastian ne demek?

"Sebastian" is a fairly common name, so to give you helpful information, I need more context. Are you interested in:

• A specific person named Sebastian? If so, please tell me more about them (e.g., their profession, location, anything that makes them unique).

• The name Sebastian itself? I can provide information on its origin, meaning, and popularity.

• A fictional character named Sebastian? Many fictional characters share this name. Please specify the book, movie, show, or game they're from.

Please provide more details so I can give you a more relevant and useful answer.