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black hat

noun, Informal.
1.
a villain, as in a cowboy movie; bad guy.
2.
Digital Technology. a hacker who violates the security of a system for personal profit or for the gratification of causing damage.
Idioms
3.
wear / put on a black hat, to behave villainously.
Compare white hat.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for black hat
Contemporary Examples
Historical Examples
  • A pleasing variety is sometimes obtained by using a colored underfacing on a black hat.

    Make Your Own Hats Gene Allen Martin
  • It was the Klondike person, radiant in the costume of black and the black hat.

    Ruggles of Red Gap Harry Leon Wilson
  • We were in mourning for an aunt, so she wore a dress of fine black voile, and a black hat with long feathers.

    The White Peacock D. H. (David Herbert) Lawrence
  • She had on a black hat, over which a white veil was fastened.

    A Spirit in Prison Robert Hichens
  • She wore a black gown, without ornamentation, and a black hat of graceful form.

    The Blue Wall Richard Washburn Child
British Dictionary definitions for black hat

black hat

noun
1.
(informal)
  1. a computer hacker who carries out illegal malicious hacking work
  2. (as modifier): black-hat hackers Compare white hat
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Slang definitions & phrases for black hat

black hat

modifier

: the black-hat rustler in the horse opera

noun phrase

  1. A villain; heavy: The only way I can do that is to make you the black hat/ This time, perhaps, there are black hats on both sides
  2. he badge or symbol of a villain: Companies have this black hat on when they go to court

verb

: They do not try to penetrate security systems or conduct clandestine tests... ''There is no black-hatting''

[1970s+; frtheHollywoodtraditionthat villains in western movies always wore black hats]

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Difficulty index for black hat

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Word Value for black

13
16
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