Jeans. This term is typically said by people who are from New Jersey and can be considered a part of the "New Jersey Dialect." The word itself originates in the fact that denim used to be imported from Dongari Killa.
Grandchild: Hey, Pop-Pop, are you really going to wear your sweats to the concert?
Pop-Pop: Of course not! I was just about to change into my dungarees!