polyglot (adj.)youdaoicibaDictYouDict[polyglot 词源字典]
1650s, from Greek polyglottos "speaking many languages," literally "many-tongued," from polys "many" (see poly-) + glotta, Attic variant of glossa "language," literally "tongue" (see gloss (n.2)). As a noun from 1640s.[polyglot etymology, polyglot origin, 英语词源]