Arabic

warāˀ- - location that is behind, beyond; the time past (BK 2 1527, Lane 2933)

Cf. warāniyat- ‘cul, derrière’ [BK 2 1525] (compared to the present root in [DRS 631]).

PS
*ˀVrāw­, *wVrāˀ­ - back (SED I No. 10)