n.1.Professional cant; the chatter of conjurers to divert attention from their tricks; hence, jugglery.
2.Illegal or unethical behavior, usually surreptitious; as, the boss got suspicious when profits seemed lower than expected, and hired an investigator to see if any hankey-pankey was going on.
3.Extramarital sexual relations, especially adultery.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.