jinx, in popular superstition and folklore, is:
A type of curse placed on a person that makes them prey to many minor misfortunes and other forms of bad luck;
A person afflicted with a similar curse, who, while not directly subject to a series of misfortunes, seems to attract them to anyone in his vicinity.
An object/ person that brings bad luck. Ex:(Abu Ahmad).
A common slang term used when two people say the same thing at the same time, said as a game among children.