Definitions by Pete McDonald

I'dn't 

To have not done something; an abbreviation of "I had not", coming from the abbreviations "I had" (I'd) and "had not" (hadn't).

Pete - "I think you should study chapter 12 for your Humanities exam."
Rachel - "Good idea, I'dn't thought about that chapter."

I'dn't by Pete McDonald February 24, 2003