chiton (n.)youdaoicibaDictYouDict[chiton 词源字典]
mollusc genus, 1816, from Latinized form of Greek khiton "frock (worn by both sexes), tunic, mail coat" (see chitin). Used in English in literal sense of "ancient Greek tunic" from 1850. The molluscs also are known as "coat-of-mail shells" for their mail-like covering.[chiton etymology, chiton origin, 英语词源]