From rachab; a width -- breadth, broad place.
see HEBREW rachab
H7338. rachab
רַ֫חַב noun [masculine] not feminine Job 36:16 AlbrZAW xvi (1896), 94 Di Bu] breadth, broad expanse; — absolute ׳ר 36:16 (opposed to צָ֑ר); plural construct intensive רַחֲבֵיאָֿ֑רֶץ 38:18 the broad expanse of earth.