ZERESH (zē'rĕsh, Heb. zeresh, golden). The wife of Haman the Agagite, the enemy of the Jews. She advised him to build a gallows for Mordecai, but later saw her error (Esth.5.10, Esth.5.14; Esth.6.13). Her name is Persian.

ZERESH zĭr’ ĭsh (זֶ֤רֶשׁ). The wife of Haman, the vizier of King Ahasuerus (Esth 5:10-14; 6:13).

International Standard Bible Encyclopedia (1915)

The wife of Haman (Es 5:10,14; 6:13), the vizier of Xerxes.