Top Definition
A common name used to describe someone that is very sensitive. "O" stands for "Over" and "S" stands for "Sensitive"
Guy 1: Did you see that guy cry in the movies?

Guy 2: Yea he is O.S. The Best

Guy 1: Exactly
by Boinkin Her February 13, 2010

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×