praetor (n.)youdaoicibaDictYouDict[praetor 词源字典]
elected magistrate in ancient Rome (subordinate to consuls), early 15c., from Latin praetor "one who goes before;" originally "a consul as leader of an army," from prae "before" (see pre-) + root of ire "to go" (see ion).[praetor etymology, praetor origin, 英语词源]