jockey box, noun
The compartment in your car in which you typically put your registration - similar to the "glove compartment."
I keep my insurance in my jockey box.
Added on December 5, 2012 by Trista Witherspoon
penny weight, noun
A very tiny measurement of weight.
She's so tiny she cannot weigh any more than a penny weight.
Added on May 9, 2011 by danielslaughter