What is emo?

I'm wondering what does emo mean and so I asked my friend about it and they would say that it is just a short cut for the word emotional or a loner. I also researched more about emo and posted below are my discoveries...

1. Well most people would consider it punk with emotion is what we would call the classification of a new rising way of feeling your inner self. When you are refering to someone has being emo, you are usually are stating that they are sensitive, or have a emotional personality. emo truely is a type of music that started in the eightys and is rapidly moving back in its popularity. It's a sub genre of punk music which has grown to be more popular then punk it's self. Each and every day more and more emo bands are coming out. However, emo most commonly is refered to as a type of fashion.

source: www.emo-corner.com

2. Emo is also sometimes associated with a certain fashion. The term "emo" is sometimes stereotyped with tight jeans on males and females alike, long fringe brushed to one side of the face or over one or both eyes, dyed black, straight hair, tight t-shirts which often bear the names of rock bands (or other designed shirts), studded belts, belt buckles, canvas sneakers or skate shoes or other black shoes (often old and beaten up) and thick, black horn-rimmed glasses. Emo fashion has changed with time. Early trends included straight, unparted hair, tightly fitting sweaters, button-down shirts, and work jackets.This fashion has at times been characterized as a fad.
In recent years the popular media has associated emo with a stereotype that includes being emotional, sensitive, shy, introverted, or angsty. It is also associated with depression, self-injury, and suicide.

source: wikipedia.org