We don't have synonyms for milles yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are milled, millet and miller.
(n) :
(dated) Alternative spelling of mill. [A grinding apparatus for substances such as grains, seeds, etc. (Some are small and simple, and some are large and complex.)]
(n) :
(dated) Alternative spelling of mill. [A grinding apparatus for substances such as grains, seeds, etc. (Some are small and simple, and some are large and complex.)]