The word itself means ability to directly know and perceive, to feel and to be. The state or quality of being conscious of something.
Before you can truly be aware of something, you want to be aware of yourself. Since you are the observer or perceiver, you also want to be aware of where you are standing.
"Awareness allows us to get outside of our mind and observe it in action."- Dan Brule
"Withdraw your awareness from everything, and just let it rest within yourself, and you have arrived home." - Osho