An ambiguous phrase or double meaning, especially one with a hidden or suggestive secondary meaning; a witty or clever play on words.
From French 'entendre' (to understand), derived from Old French 'entendre', from Latin 'intendere' (to direct toward, intend). In English, it became famous through the phrase 'double entendre' referring to words with double meanings.
The phrase 'double entendre' became so popular that most English speakers forgot 'entendre' was just the French word for 'understanding'—a double entendre about the word 'double entendre' itself!
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