HARBONA (Est_1:10) or HARBONAH (Est_7:9).The third of the seven eunuchs or chamberlains of king Ahasuerus. It was on his suggestion that Haman was hanged upon the gallows which he had prepared for Mordecai.
Hastings' Dictionary of the Bible
Edited by James Hastings, D.D. Published in 1909
Third of the seven eunuchs of Ahasuerus. Suggested the hanging of Haman on his own gallows (Est_1:19; Est_7:9).
Fausset's Bible Dictionary
By Andrew Robert Fausset, co-Author of Jamieson, Fausset and Brown's 1888.
Har'bona. (ass-driver). The third of the seven chamberlains or eunuchs, who served King Ahasuerus. Est_1:10. (B.C. 483-475).
Smith's Bible Dictionary
By Dr. William Smith.Published in 1863
Harbona
(Heb. Charbona', חִרְבוֹנָא, prob. Pers. for ass-driver; Sept. Ο᾿αρεβωά v.r. Θαρρά), one of the seven eunuchs of king Ahasuerus or Xerxes, commanded by him to exhibit the beauty of Vashti (Est_1:10). He was probably the same with the one called HARBONAH (Heb. Charbonah, חִרְבוֹנָה, id.; Sept. changes to Βουγαθάν), who suggested to the king the idea of hanging Haman on his own gallows (chap. 7:9). B.C. 483473.
CYCLOPEDIA OF BIBLICAL, THEOLOGICAL AND ECCLESIASTICAL
press 1895.