'Half tribe' in the Bible

So Moses gave to them, to the sons of Gad and to the sons of Reuben and to the half-tribe of Joseph’s son Manasseh, the kingdom of Sihon, king of the Amorites and the kingdom of Og, the king of Bashan, the land with its cities with their territories, the cities of the surrounding land.

For the tribe of the sons of Reuben have received theirs according to their fathers’ households, and the tribe of the sons of Gad according to their fathers’ households, and the half-tribe of Manasseh have received their possession.