black hat

(redirected from a black hat)

black hat

A villainous person, often such a character in a book or film. I'm pretty sure those black hats masterminded the heist—they are known for their lying and cheating.
See also: black, hat

black hat (or white hat)

used in reference to the bad (or good) party in a situation.
This idiom refers to the colour of the hats traditionally worn by the bad (or good) characters in cowboy films.
See also: black, hat
References in periodicals archive ?
He wore the frock coat in the catalog and black jeans, a black hat and his best black lizard boots.
From a value perspective, a black hat may be highly technically competent at breaking into systems.