Main entry: joker
Definition: a playing card that is usually printed with a picture of a jester
Main entry: joker
Definition: an inconspicuous clause in a document or bill that affects its meaning in a way that is not immediately apparent
Usage: when I demanded my money he showed me the joker in the contract
Definition: a person who enjoys telling or playing jokes
Definition: a person who does something thoughtless or annoying
Usage: some joker is blocking the driveway