look up any word, like pussy:
 
3.
The lowest point
I have reached the nadir of my sorrow.
by Justin Akehurst July 01, 2003
 
1.
unique; different.
wow that was nadir.
by sharon October 24, 2003
 
2.
Nadir is an amazingly handsome and brilliant individual. He has great hair and pays a lot of attention to looking his best. He also cares about food.
Nadir is my Portuguese professor.
by Number1Nata February 04, 2010