orpiment (n.)youdaoicibaDictYouDict[orpiment 词源字典]
late 13c., from Old French orpiment "arsenic trisulphide, yellow color," from Latin auripigmentum, from aurum "gold" (see aureate) + pigmentum "coloring matter, pigment, paint" (see pigment).[orpiment etymology, orpiment origin, 英语词源]