Source : Webster's Revised Unabridged Dictionary (1913)

Masonic \Ma*son"ic\, a.
   Of or pertaining to Freemasons or to their craft or
   mysteries.

Source : WordNet®

masonic
     adj 1: of or relating to stonemasons or masonry; "masonic tools"
     2: of or relating to Freemasons or Freemasonry; "Masonic lodge"