Looking for the meaning or definition of the word Sublime Porte? Here's what it means.
Proper noun
(literally) The monumental portal at the Ottoman palace where the supreme tribunals were held; became the surname of the first palace in Burssa (now Brussa), transferred to the even grander Topkapi palace after the capital's transfer to Istanbul (the former Byzantine imperial capital Constantinople)
(figuratively) A pars pro toto for the Ottomansultanic court, hence for the imperial government, notably the vizierialdivan and the entire empire