We don't have synonyms for po' boy yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are po'boy and po boy.
(n) :
(especially Louisiana) A traditional submarine sandwich from Louisiana, typically consisting of meat or seafood, usually fried, served on a Louisiana baguette.
(n) :
(especially Louisiana) A traditional submarine sandwich from Louisiana, typically consisting of meat or seafood, usually fried, served on a Louisiana baguette.