煤斤 méijīn coal Origin Definitions Defs Strokes Stroke Words Sentences Sents 煤 méi noun coal coal; a black or brownish-black solid mineral substance used as fuel斤 jīn noun jin A unit of weight; one catty. In mainland China, it is exactly 500 grams (0.5 kg). In Taiwan, it is 600 grams. In Hong Kong and Southeast Asia, it is approximately 604.8 grams.