lox (n.)youdaoicibaDictYouDict[lox 词源字典]
1934, American English, from Yiddish laks, from Middle High German lahs "salmon," from Proto-Germanic *lakhs-, from the common IE root for the fish, *laks- (cognates: Lithuanian laszisza, Russian losos, Polish łosoś "salmon").[lox etymology, lox origin, 英语词源]