Source : Webster's Revised Unabridged Dictionary (1913)

Palatine \Pal"a*tine\, a. [F. palatin, L. palatinus, fr.
   palatium. See {Palace}, and cf. {Paladin}.]
   Of or pertaining to a palace, or to a high officer of a
   palace; hence, possessing royal privileges.

   {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
      {Palace}.

Count \Count\, n. [F. conte, fr. L. comes, comitis, associate,
   companion, one of the imperial court or train, properly, one
   who goes with another; com- + ire to go, akin to Skr. i to
   go.]
   A nobleman on the continent of Europe, equal in rank to an
   English earl.

   Note: Though the tittle Count has never been introduced into
         Britain, the wives of Earls have, from the earliest
         period of its history, been designated as Countesses.
         --Brande & C.

   {Count palatine}.
   (a) Formerly, the proprietor of a county who possessed royal
       prerogatives within his county, as did the Earl of
       Chester, the Bishop of Durham, and the Duke of Lancaster.
       [Eng.] See {County palatine}, under {County}.
   (b) Originally, a high judicial officer of the German
       emperors; afterward, the holder of a fief, to whom was
       granted the right to exercise certain imperial powers
       within his own domains. [Germany]

Source : WordNet®

count palatine
     n : a count who exercised royal authority in his own domains