joker meaning and definition

JOKER noun

Definition of joker (noun)

1. a person who enjoys telling or playing jokes
   • synonyms: jokester
2. a person who does something thoughtless or annoying
   • "some joker is blocking the driveway"
   • synonyms: turkey
3. 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"
4. a playing card that is usually printed with a picture of a jester