What language is dunca?

"Dunca" is not a recognized language. It's possible that you've misspelled a word or that it's a made-up term.

Could you please provide more context or information about what "dunca" refers to? For example:

* Where did you encounter this word?

* What was the context of its use?

* Do you have any other details about it?

With more information, I might be able to help you figure out what "dunca" means or what language it might be from.