Top definition
A term describing a book that contains all and every word(s) that a true "bro" is expected to know. There are few brotionaries out at the moment but more and better ones will be made in the future. The brotionary is not done in alphebetical order, but by importance of word.
Joe: hey what's up bro?

Steve: not much bro, just reading up on my new brotionary.

Joe: holy shit you don't know all terms already?

(Joe then proceeds to cut off all contact with Steve until further notice).
by Chief11 January 23, 2010
Get the mug
Get a Brotionary mug for your cousin James.