A term found in cuneiform documents to signify nomads, renegades, or mercenaries. They are mentioned in the Amarna letters as allies of Abdi-Ashirta, king of Amurru. The term is obviously the ancestor of the word Hebrews but does not necessarily designate the same people in all its references.
Historical Dictionary Of Ancient Egypt by Morris L. Bierbrier
Ancient Egypt. A Reference Guide. EdwART. 2011.