瀝青岩 lìqīngyán pitchstone Origin Definitions Defs Strokes Stroke Words Sentences Sents 沥青 瀝青 lìqīng asphalt asphalt; bitumen; pitch; a black or dark brown substance used for paving roads and waterproofing岩 yán noun rock (geology) rock; mineral aggregate that makes up the earth's crust