a person who enjoys telling or playing jokes a person who does something thoughtless or annoying; "some joker is blocking the driveway" To fit as if by joints; to coalesce as joints do; as, the stones joint, neatly
disapproval You can call someone a joker if you think they are behaving in a stupid or dangerous way. Keep your eye on these jokers, you never know what they will come up with. = idiot
If you describe someone or something as the joker in the pack, you mean that they are different from the other people or things in their group, and can be unpredictable
An exceptionally good roll, especially a roll that reverses the likely outcome of the game An example of a joker would be a roll of double sixes to bear off your last four checkers when your opponent otherwise wins on his next turn
A joker is an additional card in the deck that is used in some games The jokers isn't often used in serious poker, but when it is it's usually considered a wild card See also bug