1. A person who enjoys telling or playing jokes
   "The office joker kept everyone laughing with his witty quips";
   - jokester, funster [informal], wisecracker, quipster
    
2. [informal] A person who does something thoughtless or annoying
   "some joker is blocking the driveway";
   - turkey [informal]
    
3. A playing card that is usually printed with a picture of a jester
   "He kept the joker up his sleeve for a wild play"
    
4. [N. Amer, informal] An inconspicuous clause in a document or bill that affects its meaning in a way that is not immediately apparent
   "when I demanded my money he showed me the joker in the contract"

Derived forms: jokers

Type of: article, clause, comedian, comic, disagreeable person, funnyman, playing card, unpleasant person

Encyclopedia: Joker, West Virginia