'Half tribe' in the Bible

and the rest of Gilead, and all Bashan, the kingdom of Og, gave I to the half-tribe of Manasseh; all the region of Argob, even all Bashan. (The same is called the land of Rephaim.

and we took their land, and gave it for an inheritance to the Reubenites, and to the Gadites, and to the half-tribe of the Manassites.