/ ˌɪnjuˈendəʊ; NAmE -doʊ/ noun
[ C , U ] ( pl. -oes or -os ) ( disapproving ) an indirect remark about sb/sth, usually suggesting sth bad or rude; the use of remarks like this :
innuendoes about her private life
The song is full of sexual innuendo.
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WORD ORIGIN
mid 16th cent. (as an adverb in the sense that is to say, to wit , used in legal documents to introduce an explanation): Latin , by nodding at, by pointing to , ablative gerund of innuere , from in- towards + nuere to nod. The noun dates from the late 17th cent.