yardang /ˈyärˌdäNG, ˈjɑrˌdɑŋ 
/ ▸ noun a sharp irregular ridge of compact sand lying in the direction of the prevailing wind in exposed desert regions, formed by the wind erosion of adjacent material that is less resistant.
– ORIGIN early 20th century : from Turkish, ablative of yar ‘steep bank’.
EnglishOxford New American Dictionary
