We don't have synonyms for polron yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are polaron, porron and polson.
(n) :
Obsolete form of pauldron. [(historical) A component of plate armor that protects the shoulder, generally covering more than a spaulder, also protecting the armpit and overlapping with other armor over the upper chest and back.]
(n) :
Obsolete form of pauldron. [(historical) A component of plate armor that protects the shoulder, generally covering more than a spaulder, also protecting the armpit and overlapping with other armor over the upper chest and back.]