- rex (n.)
[rex 词源字典]
- "a king," 1610s, from Latin rex (genitive regis) "a king," related to regere "to keep straight, guide, lead, rule," from PIE root *reg- "to rule, to lead straight, to put right" (cognates: Sanskrit raj- "king;" Old Irish ri "king," genitive rig; see regal).[rex etymology, rex origin, 英语词源]