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1.
Also known as a dead bolt chain. Nigger locks are only found in seedy neighborhoods and run-down motels, where more expensive locks cannot be afforded.

Nigger lock can also be used as a verb, as in to "nigger lock a door."
Haha, this place is so cheap all they could afford was a bunch of nigger locks.

We've gotta nigger lock that door before the manager calls the cops on us.
by John Harvey April 28, 2008
 
2.
- A rag doll with raspy locks of hair that is of dark skin tone.

- A person with dark skin and nappy ass locks of hair.
"On that shelf is my favorite doll ever - niggerlocks right next to rock a by kneegrow"

"I cant believe that she walked out of the house with those niggerlocks!"
by kneegrow86 January 24, 2010