joker

Noun
  1. A person who enjoys telling or playing jokes (synset 110243768)
    is a type of: comedian, comic - a professional performer who tells jokes and performs comical acts
    same as: jokester
  2. A person who does something thoughtless or annoying (synset 110243965)
    "some joker is blocking the driveway"
    is a type of: disagreeable person, unpleasant person - a person who is not pleasant or agreeable
    same as: turkey
  3. An inconspicuous clause in a document or bill that affects its meaning in a way that is not immediately apparent (synset 106405694)
    "when I demanded my money he showed me the joker in the contract"
    is a type of: article, clause - a separate section of a legal document (as a statute or contract or will)
  4. A playing card that is usually printed with a picture of a jester (synset 103607177)
    is a type of: playing card - one of a pack of cards that are used to play card games

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