What is polarization?

"Polarization is a property applying to transverse waves that specifies the geometrical orientation of the oscillations. In a transverse wave, the direction of the oscillation is perpendicular to the direction of motion of the wave"

when you have a rod and you touch the object that has equal amount of electrons and neutrons and all of the opposite charges that are from the rod get move to the front and the same charges to the rod move to the back of the object.