Webster's Dictionary 
(1): ( a.) Of or pertaining to a palace, or to a high officer of a palace; hence, possessing royal privileges.
(2): ( n.) One invested with royal privileges and rights within his domains; a count palatine. See Count palatine, under 4th Count.
(3): ( n.) A palatine bone.
(4): ( n.) The Palatine hill in Rome.
(5): ( a.) Of or pertaining to the palate.
The Nuttall Encyclopedia 
One of the seven hills of ancient Rome, and, according to tradition, the first to be occupied, and forming the nucleus of the city; it became one of the most aristocratic quarters of the city, and was chosen by the first emperors for their imperial residence.