IradIRAD (ī'răd, Heb. ‘îrādh). Grandson of Cain and son of Enoch (Gen.4.18). IRAD ī’ răd (עִירָ֔ד). Son of Enoch and grandson of Cain (Gen 4:18). International Standard Bible Encyclopedia (1915) Grandson of Cain and son of Enoch (Ge 4:18).