云雷纹 yúnléiwén cloud and thunder pattern Origin Definitions Defs Strokes Stroke Words Sentences Sents 云 雲 yún noun cloud cloud; any cloud-like mass of smoke, dust, or steam in the air雷 léi noun thunder thunder; the loud noise caused by atmospheric electrical discharge纹 紋 wén noun pattern lines or patterns on the surface of an object, such as wood grain or ripples