jok

v. t. [ imp. & p. p. Joked p. pr. & vb. n. Joking. ] To make merry with; to make jokes upon; to rally; to banter; as, to joke a comrade. [ 1913 Webster ]

v. i. [ L. jocari. ] To do something for sport, or as a joke; to be merry in words or actions; to jest. [ 1913 Webster ]

He laughed, shouted, joked, and swore. Macaulay.

Syn. -- To jest; sport; rally; banter. See Jest. [ 1913 Webster ]

n. 1. One who makes jokes or jests. [ 1913 Webster ]

2. (Card Playing) See Best bower, under 2d Bower. [ 1913 Webster ]

3. (Card Playing) An extra card usually included in a deck of playing cards, having the same design as the others on the back, but on the face having a picture of a jester. It is not included in the deck used in most games, but in certain games may be included and then takes on a special value, such as the highest-valued card, or a wild card. [ PJC ]

4. A clause placed in a document, such as a contract or a piece of legislation, not itself appearing significant, but in a subtle way substantially changing the effect of the document. [ PJC ]

5. Hence: Any fact or condition which is unknown or not apparent, which reverses an apparently advantageous position; a kicker. [ PJC ]

6. A person; a fellow; a chap; -- usually used in a mildly disparaging sense; as, who's the joker who left the ice cream on the table?. [ PJC ]

adj. intended as a joke; -- of communications.
Syn. -- jesting, jocose, jocular, jocund. [ WordNet 1.5 +PJC ]

no joking matter a serious matter. [ PJC ]