mat-tionary 

A dictionary for stupid people. If someone is a dick they may use a mat-tionary to look up the meaning of a word. This is also a very useful anti-sawyeristic device.

"Hey Dick, pass me the mat-tionary"

mat-tionary by colin the blade October 6, 2005

Mactionary 

A nickname given to the Dictionary app on recent Mac computers. The app is based on the New Oxford American Dictionary.

I always keep my Mactionary handy when I'm reading early American literature.

Mactionary by Hikari24 May 2, 2011