The Collaborative International Dictionary of English v.0.48:

Falcidian \Fal*cid"i*an\, a. [L. Falcidius.]
   Of or pertaining to Publius Falcidius, a Roman tribune.
   [1913 Webster]

   Falcidian law (Civil Law), a law by which a testator was
      obliged to leave at least a fourth of his estate to the
      heir. --Burrill.
      [1913 Webster]