specimen (n.)youdaoicibaDictYouDict[specimen 词源字典]
1610s, "pattern, model," from Latin specimen "indication, mark, example, sign, evidence; that by which a thing is known, means of knowing," from specere "to look at" (see scope (n.1)). Meaning "single thing regarded as typical of its kind" first recorded 1650s.[specimen etymology, specimen origin, 英语词源]