层云 céngyún stratus cloud Definitions Defs Origin Strokes Stroke Words Sentences Sents céngyún stratus cloud 层 層 céng noun layer A physical sheet, thickness of material, or stratum covering a surface云 雲 yún noun cloud cloud; any cloud-like mass of smoke, dust, or steam in the aircéngyún layered clouds 层 層 céng to pile up (literary) To overlap; to pile one on top of another; repeated云 雲 yún noun cloud cloud; any cloud-like mass of smoke, dust, or steam in the air