Nebaioth

height.

(1.) Ishmael's eldest son (Gen 25:13), and the prince of an Israelitish tribe (Gen 25:16). He had a sister, Mahalath, who was one of Esau's wives (Gen 28:9; 36:3).

(2.) The name of the Ishmaelite tribe descended from the above (Gen 25:13; 25:18). The "rams of Nebaioth" (Isa 60:7) are the gifts which these wandering tribes of the desert would consecrate to God.

EBD - Easton's Bible Dictionary