风成 fēngchéng eolian Origin Definitions Defs Strokes Stroke Words Sentences Sents 风成岩 fēngchéngyán aeolian rocks aeolian rocks; eolianite风成砂岩 fēngchéngshāyán aeolian sandstone Sandstone formed by wind-driven deposits, typically found in desert regions where lack of vegetation allows for extensive erosion and re-deposition.