A person with bands of gray hair - usually at the temples. Gray-Bar's can be of any age, but they are typically in their 40's or older and usually they are men. However, there are progressive women adopting the Gray-Bar look.

Typically, Gray-Bar's have a lot of experience and may be looked down upon by the Gen Y and Millennial crowd. They don't know everything, but their experience should count for something. Just because they are "old" doesn't mean they don't know anything and that they cannot learn anything new. They can!
Man, that meeting was filled with Gray-Bar's.

I can't believe that Gray-Bar was talking about Twitter.
by Freecher July 2, 2010
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This is what the slang name for the Hall Of Justice Jail in downtown Los Angelas was. ( H.O.J.J)
The jail was located on the upper floors of the city hall building. When the inmates would go to court via the under the street passage between the court building and the jail, one could see that name on the barred (grey) entranceway leading to the jail.
The inmates filed past the deputies leading the way into the Gray Bar Hotel.
by Captain Save A Hoe October 12, 2013
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A sudden onset of chest pain that is brought on by being arrested. Symptoms are usually so severe that the detainee must be diverted to the ER rather than being put behind bars.
"Hey man loosen these cuffs! I can't breathe! I think I'm dying! I got gray bar chest pain...I can't go to jail, I gotta go to the ER!"
by Weegle May 29, 2009
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