We don't have synonyms for dukes yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are dues, duke and dunes.
(n) :
Ellipsis of Dukes County. [One of 14 counties in Massachusetts, United States. County seat: Edgartown. It is located on Martha's Vineyard and other offshore islands.]
(n) :
Ellipsis of Dukes County. [One of 14 counties in Massachusetts, United States. County seat: Edgartown. It is located on Martha's Vineyard and other offshore islands.]