* "Fill": This is a common verb meaning to make something full.
* "Fyl" as a nickname: It could be a shortened version of a longer name, like "Phyllis" or "Fylvia."
* "Fyl" as a misspelling: It could be a misspelling of another word, like "fly" or "feel."
To help me understand what you mean, please provide more context. For example:
* What was the word used in? (A sentence, a conversation, a website, etc.)
* What was the topic of the conversation or text?
With more information, I can help you understand what "fyl" means.