A biblical form of the name of God (Yahweh), used especially in Rastafarianism.
Origin of Jah
Hebrew yah; see hwy in Semitic roots.
(religion) shortened form of Jehovah, God's personal name in the Bible. Often appearing as part of Biblical names as "-iah", or "Jeho-" as in Isaiah, Jeremiah, Jehoshua, and Jehosaphat, and Hebrew words like "hallelujah".