the point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected
In general terms, the zenith is the direction pointing directly "above" a particular location; that is, it is one of two vertical directions at the location, orthogonal to a horizontal flat surface there. ...
XD, but point taken, the thread can only go down from here
Every time we try to stick wings in pigs it ends in a bloody mess