The Comprehensive Aramaic Lexicon

GT D1.43:18 :וּדחֵלו [גובר]י٠א ארום אֶת٠ָעַלוּ לַפְלָטוֹרִין דיוסף : the men were afraid because they were brought to Joseph's palace

See the entire entry for plṭwryn n.m. palace, pretorium