BIGTHANA, BIGTHAN (bĭg'thā'na, bĭg'thăn). One of the chamberlains of King Xerxes (Ahasuerus) who with Teresh had plotted to kill the king. Mordecai heard of the plot and through Esther warned the king, who had the two men hanged (Esth.2.21-Esth.2.23; Esth.6.2). International Standard Bible Encyclopedia (1915) big-tha’-na (bighethan, bighethana’; Septuagint omits name): One of the two chamberlains or eunuchs of Xerxes on ("Ahasuerus") who conspired against the king’s life, the conspiracy being detected by Mordecai and the culprits hanged (Es 2:21). Possibly these men had been partially superseded by the degradation of Vashti and were thus prompted to take revenge Xerxes. Bigthan One of the eunuchs who “kept the door” in the court of Ahasuerus. With Teresh he conspired against the king’s life. Mordecai detected the conspiracy, and the culprits were hanged (Esther 2:21-23; 6:1-3).