1 a : supreme power esp. over a body politic b : freedom from external control : AUTONOMY
2 : one that is sovereign; especially : an autonomous state
That is as good a definition as any but for an excellent philosophical treatise, You might find this worth the read:
I believe our sovereignty is embodied by the individual American. Each and every one of us represents a sovereign and as such, when bound together with a like mind, the supreme authority. Our power lies in our Liberty and Freedom. We as a people are the masters of our own destiny.
The sovereignty we possess now is being challenged with perhaps the greatest challenge we have ever faced and in order to over come the sycophantic, out of control government we are now faced with, we must band together. Once again, the American people are faced with a turning point. Just as the American Revolution, the Civil War, World War I, WWII, Korea and Vietnam define those generations, so will our war against oppression and domination by those intent on a New World Order.
We are faced with hard choices and there will be plenty of those in the near future. Just remember, we are Free and the Liberty we share was won not through diplomacy or purchased with money but with the sweat and blood of heroes!
Those who went before us and sacrificed all so that we might live free and breath the the glorious breath of Liberty!