Possible Scenarios:
* Misspelling: It might be a misspelling of a real word. Could you double-check the spelling or provide any context where you encountered this term?
* Fictional term: It might be a term from a fictional universe, a book, or a game.
* Nonsense word: Sometimes people create nonsense words for fun or to express a specific feeling or concept.
To help me understand what you're looking for, please provide more information:
* Where did you see this word? (e.g., a book, a website, a conversation)
* What was the context? (e.g., what were people talking about?)
With more details, I might be able to figure out what "twyndyllyngs" actually refers to.