How do you define astral world ?

Some says astral world is the world where lost souls duels in the darkness and some says astral world is the world where souls awaits for the judgement day to come . Well in my own personal opinion I define astral world as a dimensional space within the other frequencies of our vision that was translated by our mind , and there the evils such as the extra terrestials entities and demonic spirits ( I all termed these as a much more lighter form that of our physical human bodies ) that are manipulating our mind in the cover of the invisible frequencies were ordinary brain of the physical human mind are not permitted to enter. ....... WHAT's YOURs ?