innuendo

Short definition from Wiktionary

Noun

1. 1
   A derogatory hint or reference to, or (often sexual) insinuation about, a person or thing.
2. 2
   A remark that is suggestive of something sexual without stating it explicitly.
3. 3
   A rhetorical device with an omitted, but obvious conclusion, made to increase the force of an argument.
4. 4
   Part of a pleading in cases of libel and slander, pointing out what and who was meant by the libellous matter or description.

Verb

1. 1
   To interpret (something libellous or slanderous) in terms of what was implied.