Meaning : A person who enjoys telling or playing jokes.
Synonyms : jokester
Meaning : A person who does something thoughtless or annoying.
Some joker is blocking the driveway.
Synonyms : turkey
Meaning : 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.
Meaning : A playing card that is usually printed with a picture of a jester.