nautical (adj.)youdaoicibaDictYouDict[nautical 词源字典]
1550s, from -al (1) + nautic from Middle French nautique, from Latin nauticus "pertaining to ships or sailors," from Greek nautikos "seafaring, naval," from nautes "sailor," from naus "ship," from PIE *nau- (2) "boat" (see naval).[nautical etymology, nautical origin, 英语词源]