The Comprehensive Aramaic Lexicon

TgJ Jud3:23 :וֻנפַק אֵהֻוד לְאַכסַדרָא וַאְחַד בְדַשֵי עִלִיתָא : Ehud went out to the exedra and closed the door-panels of the upper-room †

See the entire entry for ˀeksedrā n.m./f. hall, arcade