dry wash

English Thesaurus

1. the dry bed of an intermittent stream (as at the bottom of a canyon) (noun.object)

hypernym	:	creek bed, streambed,
definition	:	a channel occupied (or formerly occupied) by a stream (noun.object)

domain region	:	west, western united states,
definition	:	the region of the United States lying to the west of the Mississippi River (noun.location)