lewdness. Gross, wanton, and public indecency that is outlawed by many state statutes; a sexual act that the actor knows will likely be observed by someone who will be affronted or alarmed by it. See Model Penal Code § 251.1. — Also termed open lewdness. Cf. INDECENT EXPOSURE; OBSCENITY. [Cases: Lewdness  1. C.J.S. Lewdness §§ 2–9.]

[Blacks Law 8th]