The Collaborative International Dictionary of English v.0.48:

Jacobinic \Jac`o*bin"ic\ (j[a^]k`[-o]*b[i^]n"[i^]k), Jacobinical
\Jac`o*bin"ic*al\ (j[a^]k`[-o]*b[i^]n"[i^]*kal), a.
   Of or pertaining to the Jacobins of France; revolutionary; of
   the nature of, or characterized by, Jacobinism. --Burke. --
   Jac`o*bin"ic*al*ly, adv.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Jacobinical
    adj 1: of or relating to the Jacobins of the French Revolution;
           "Jacobinic terrorism" [syn: Jacobinic, Jacobinical]