murex (n.)youdaoicibaDictYouDict[murex 词源字典]
kind of shellfish which yields a purple dye, 1580s, from Latin murex (plural murices) "purple fish, purple dye," probably cognate with Greek myax "sea mussel," of unknown origin, perhaps related to mys "mouse" (see muscle (n.) and mussel).[murex etymology, murex origin, 英语词源]