double entendreyoudaoicibaDictYouDict[double entendre 词源字典]
also double-entendre, 1670s, from French (where it was rare and is now obsolete), literally "a twofold meaning," from entendre (now entente) "to hear, to understand, to mean," from Latin intendere (see intend). The proper Modern French phrase would be double entente, but the phrase has become established in English in its old form.[double entendre etymology, double entendre origin, 英语词源]