Eunuch means in the bible: An emasculated class of men who were attached to the eastern courts. These men were assigned to the courts of eastern rulers as guards for the harems. They also held positions of trust. In 2 Kgs, Eunuchs is mentioned. 20:18; Isa. 39:7; 56:4; Jer. 38:7-13; 41:16; Matt. Acts 8;27-38.
(in Bible Dictionary)