ha'-thak (hathakh; Septuagint Hachrathaios): One of the chamberlains of Ahasuerus, appointed to attend on Esther (Es 4:5,6,9,10, the King James Version "Hatach"), through whom she learned from Mordecai of Haman's plot.
The International Standard Bible Encyclopedia
Hathach
The International Standard Bible Encyclopedia, James Orr (1915). Public domain, from the CrossWire SWORD module.