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