Kitto's Popular Cyclopedia of Biblial Literature
Palace, in Scripture, denotes what is contained within the outer enclosure of the royal residence, including all the buildings, courts, and gardens (; comp.;;;;;;;;;; ). In the New Testament the term palace is applied to the residence of a man of rank (;;; ). The specific allusions are to the palace built by Herod, which was afterwards occupied by the Roman governors, and was the prætorium, or hall, which formed the abode of Pilate when Christ was brought before him (): the other passages above cited, except , refer to the residence of the high-priest.
The particulars which have been given under the head House, require only to be aggrandized to convey a suitable idea of a palace; for the general arrangements and distribution of parts are the same in the palace as in the house, save that the courts are more numerous, and with more distinct appropriations, the buildings more extensive, and the materials more costly. The palace of the kings of Judah in Jerusalem was that built by Solomon, called 'the house of the forest of Lebanon,' of which some particulars are given in; and if read along with the description which Josephus gives of the same pile (Antiq. viii. 5), a faint idea may be formed of it, as a magnificent collection of buildings in adjoining courts, connected with and surrounded by galleries and colonnades.
Kitto, John, ed. Entry for 'Palace'. "Kitto's Popular Cyclopedia of Biblial Literature". https://www.studylight.org/encyclopedias/eng/kbe/p/palace.html.