1. A woman who moves for egalitarian society, and detests women who do not (see red collar)

2. In BDSM, an unwilling sex slave. Heavily frowned upon in most circles.
"Why don't those black collars see that submission is in our nature?"

"As soon as he tried to make her a black collar, they kicked his ass and called the cops. He's not allowed back."
by CheshireCat22 November 12, 2014
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Crimes committed by religious leaders/members of the clergy. It's usually covered up by members of the religion in order to "protect the faith" by not exposing the hypocrisy of judgemental bigots (like when homophobic pastor Ted Haggard got caught buying meth from the male prostitute he hired).
After the Pennsylvania Grand Jury investigated Catholic dioceses in their state, the attorney general found that unreported black collar crime was shockingly high.
by Religion Is Cancer December 18, 2018
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An undertaker or someone that buries people, someone that wears black all the time.
A black collar is like a gray collar, you can take it off whenever you feel like it, and you don't feel confined to the same blue or white collar everybody else has always tried to put around your neck or their own neck (since it sounds like a way to put somebody on a leash, or make yourself look like you're on somebody else's leash even when you're really not). That's probably why you never hear about a black collar or a grey collar, the wrong people have always used white and blue collars to ostracize or control the minds of everybody that doesn't call themself blue or white collar, or try to fit in one or the other group.
by The Original Agahnim June 26, 2021
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Black Collar is co-equivalent with white collar given the heat generating properties of the color black when worn, meaning that Black Collar signifies an indoor labor class. Not to mention since the word 'collar' signals the near rhyme 'color' , Black Collar signifies the end of merely white-supremacist 'collar' or 'color' dualities, such as white collar and blue collar.

Black Collar workers are often breaking from the norm by wearing more colorful and artistic clothing to the workplace. It is thought that Black Collar is post-metaphorical in nuance, and signifies something apart from the word 'black' traditionally used to describe racial identity.
Grateful to be Black Collar this summer...
by CoaltownBrown January 3, 2023
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