Define Black Shirt Meaning

Black Shirt
an article of clothing that makes the wearer look extremely attractive

you should NEVER wear that black shirt again; it makes you look too hot
By Nell
Black Shirt
A man feared for his ability to run you over, strip the ball and return it for a touchdown.

The Black Shirts are the best defense in college football
By Saba
Black T-shirt Convention
A concert, house show, party, or similar occasion when a group of "scenesters" can be found trying to outcool each other. Often the attire of those at these functions includes a black t-shirt, which may have a band logo, skull, or something else retarded printed on it.

person 1:Do you remember that hardcore show?
person 2: Yeah, fucking black t-shirt convention.
By Zarla