1. an allusive or oblique remark or hint, typically a suggestive or disparaging one:"she's always making sly innuendoes"
Word Originmid 16th century (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 century.