We don't have synonyms for pork pies yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are porkpie, pork pie and porkpies.
(n) :
Ellipsis of pork pie hat. [A flat-topped, round, man's hat popular among musicians of jazz, blues, and ska, made famous by the actor Buster Keaton and the jazz musician Lester Young.]
(n) :
Ellipsis of pork pie hat. [A flat-topped, round, man's hat popular among musicians of jazz, blues, and ska, made famous by the actor Buster Keaton and the jazz musician Lester Young.]