bottle black 

noun. Used to refer to a person with unnaturally black hair. The name comes from the fact that they dye their hair, presumably with something that came from a bottle.

Can also be used in a derogatory manner.

The opposite of bottle blonde.

Girl 1: Look at her roots! She's a total bottle black.

bottle black by Steph (editor - steferrknee) April 12, 2006

bottle black 

(n.) a person who has dyed his or her hair black (see bottle blonde). The term comes from the fact that hair dye comes in bottles.

She's a bottle black, but her hair is still pretty.

bottle black by Chantelle February 10, 2005