I feel meditation is a way to improve your communication with yourself. Breaking the barriers which you have with your own self.
We are so used to seeing the outside world that we take whats inside us for granted. We know how to operate a mobile phone, how to charge it and how to replace batteries but we dont know how to charge ourselves. Meditation may help us in this process.
At deeper levels meditation may mean uniting ourselves with the nature… earth, water, sun, moon, sky… everything.