Top definition
A knock phone would be a person's second or alternate phone that is only used for things such as drug dealing. This phone would not be tied to the owner in any way.
I just got this knock phone and when I call you my caller ID comes up it says Rick James!
by Cali420 October 29, 2013
Mug icon

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the shirt