Bible Dictionary

Iru

(watch), the eldest son of the great Caleb son of Jephunneh. (1 Chronicles 4:15) (B.C. 1451.)

Smith's Bible Dictionary (1863)

(watch), the eldest son of the great Caleb son of Jephunneh.

Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary

I'RU (watch),the eldest son of Caleb, the faithful spy. 1 Chr 3:15.