deacon (n.)youdaoicibaDictYouDict[deacon 词源字典]
Old English deacon, diacon, from Late Latin diaconus, from Greek diakonos "servant of the church, religious official," literally "servant," from dia- "thoroughly" + PIE *kon-o-, from root *ken- (1) "to set oneself in motion."[deacon etymology, deacon origin, 英语词源]