1. the tip (nozzle) of a device used to deliver enemas or colonics; usually it's not very clean.
2. someone you don't like and can't trust, who acts like a complete asshole most of the time
2. someone you don't like and can't trust, who acts like a complete asshole most of the time
That dude in my lab is such a cognozzle. He's always stealing my ideas, eating my lunch, and taking credit for my work.
by Deanz October 5, 2006
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