look up any word, like dirty sanchez:
 
1.
biggest, coolest, most important, worst, any extremety.
"we were making brownies and we made the only mess."
by ghettodawg2 August 07, 2007
 
2.
One person, alone, who enjoys one other persons talents enough to want to form a friendship, or relationship, with them.

When plural, may be used as groupie, for supporting a group, or supporting AS a group.
W:I think you are my groupie.
J: I am not a group, and neither are you.
W: Well, no. So what are you then?
J: I'm an only.
by JDiebold August 28, 2007