From arab; a willow (from the use of osiers as wattles) -- willow.
see HEBREW arab
H6155. arab
or arabah II. [עֲרָבָה] noun [masculine] poplar (populus Euphratica = Arabic We in DeGn (4), 568 KerstenZPV ii. 209 DeIs (4) 44, 4 Löwp. 300 Anm.; Late Hebrew עֲרָבָה √ obscure); — plural absolute עַליִֿבְלֵימָֿ֑יִם עֲרָבִים Isaiah 44:4, compare Psalm 137:2; construct עַרְבֵינָֿ֑חַלLeviticus 23:40 (H), Job 40:22; נַחַלהָֿעֲרָבִים Isaiah 15:7 (a wady in Moab; identification dubious, see conjectures in BuhlGeogr. 124).