This is the definition of friend from www.freedictionary.com:
friend 
(fr
nd)
n.
1. A person whom one knows, likes, and trusts.
2. A person whom one knows; an acquaintance.
3. A person with whom one is allied in a struggle or cause; a comrade.
4. One who supports, sympathizes with, or patronizes a group, cause, or movement: friends of the clean air movement.
5. Friend A member of the Society of Friends; a Quaker.
We all know that is crap. A friend is someone that can piss you off to no end...because you actually care.
