A fraternal order of highly skilled men who are charged with being the keepers of "The Knowledge".

A semi secret society.

Black hats are known for their courteous and tactful behavior, being well groomed and being well dressed. Black hats are often regarded as "Anti Heros" and members are commonly very successful in their personal lives.
The Black Hats are a growing fraternal order and are very selective of their members.
by Mr. BadHat March 11, 2016
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An ultra-Orthodox or Haredi Jew, known for always having a big beard and a big black hat.
Those black hat Jews are crazy, they'll beat your ass if you disrespect in their neighborhood.
by Snake Fish April 9, 2009
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used in the SEO (Seach Engine Optimisation) industry as a way of describing players which in order to reach the goal of high rankings, participate in activities NOT liked by the Search Engines.
The only way to get high rankings in your industry is to employ a Black Hat SEO.
by Shak June 24, 2004
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Word up G, I just got m new copy of Black Hat to run on my ghetto 386, yo'.
by Shrike September 4, 2003
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A villian, a bad-guy, the guy who wears the black hat fighting the hero- not to be confused with that guy from RUN-DMC !
Man, Tyson was definitely the BLACK HAT in that fight !
by Rob Postuma September 15, 2003
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Noun: An adventure vlogger on YouTube who travels and is often referred to as Black Hat or BlackHat but goes by the user name BlackHat2005. Although the 2005 in the name is not widely known, it is thought to be no coincidence, and a secret. This is not the case, however, the reason is only told upon request.
In addition, it is often assumed that he is in someway affiliated with the group of hackers also known as blackhat, it is said that this name is used not in attempts to copy these people, but is rather for personal reasons.
Have you seen that awesome traveling vlogger Black Hat?
by BH'05 October 24, 2012
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Vagina. Twat (rhyming slang). Black hat = twat = Vagina.
I like a bit of the old black hat now and again and again and again and again.
by muffindamule October 5, 2006
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