We don't have synonyms for jackses yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are jackies.
(n) :
A surname originating as a patronymic derived from Jack.
(n) :
(slang, now chiefly Ireland) Alternative form of jakes: an outhouse or lavatory. [(now chiefly Ireland) A place to urinate and defecate: an outhouse or lavatory.]
(n) :
A surname originating as a patronymic derived from Jack.
(n) :
(slang, now chiefly Ireland) Alternative form of jakes: an outhouse or lavatory. [(now chiefly Ireland) A place to urinate and defecate: an outhouse or lavatory.]