noun
: a concentration of pebbles and boulders on the surface of the ground in a desert resulting from removal of sand and dust particles by the wind and protecting the underlying material from further wind erosion
noun
: a concentration of pebbles and boulders on the surface of the ground in a desert resulting from removal of sand and dust particles by the wind and protecting the underlying material from further wind erosion
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012