Probably the same as ro'sh; Rosh, the name of an Israelite and of a foreign nation -- Rosh.
see HEBREW ro'sh
H7220. Ro
'sh III. רֹאשׁ noun masculine son of Benjamin; — Genesis 46:21, Ρως.
IV. רֹאשׁ proper name, of a people Rôsh (so ᵐ5. and most;> chief Ew Sm and others (ᵑ9 principem capitis mosoch); — only in phrase וְתֻכָ֑ל מֶשֶׁךְ ראֹשׁ מָגוֺג)נְשִׁיא (אֶרֶץ גּוֺג Ezekiel 38:2-3, 39:1, Ρως; not identified.
I, II. רֹב רַב see רבב III. רב see רבב רִב see ריב