The Arabic term for an ephemeral river channel in a desert area. Flow may occur very occasionally.
Geography
In a hot desert, a steep-sided, flat-floored valley, very occasionally occupied by an intermittent stream. Wadis were probably cut during the rainier pluvials; see Morin et al. (2007) Adv. Geosci. 12 on wadis. See also F. El-Baz, ed. (2003).