helot (n.)youdaoicibaDictYouDict[helot 词源字典]
1570s (with a capital -h-) "Spartan serf," from Greek Heilotes, plural of Heilos, popularly associated with Helos, Laconian town reduced to serfdom by Sparta, but perhaps related to Greek halonai "be captured." In extended use by 1820s.[helot etymology, helot origin, 英语词源]