The Collaborative International Dictionary of English v.0.48:

palatine \pal"a*tine\, a. [F. palatin, L. palatinus, fr.
   palatium. See Palace, and cf. Paladin.]
   1. Of or pertaining to a palace, or to a high officer of a
      palace; hence, possessing royal privileges.
      [1913 Webster]

   2. Of or pertaining to the Palatinate.
      [PJC]

   3. Of or pertaining to a Palatine[1].
      [PJC]

   Count palatine, County palatine. See under Count, and
      County.

   Palatine hill, or The palatine, one of the seven hills of
      Rome, once occupied by the palace of the C[ae]sars. See
      also Palatine Hill in the vocabulary, and Palace.
      [1913 Webster]