Heaven and the point between

So what does Zenith mean? The definition is:
Zenith: This is the point in the sky directly above the observer. It is the highest point on the celestial sphere directly opposite the nadir, the lowest point on this sphere. (definition riped from here.)
Basicly means its the highest point above you. I take it as a celestial meaning, but w'ever. Over-Zenith to me means your over the highest point (to me its the heavens) you can be. Yeah I know it doesnt make that much sense, but you can take it for whatever you want.