Source : Webster's Revised Unabridged Dictionary (1913)

Sovereignty \Sov"er*eign*ty\, n.; pl. {Sovereignties}. [OE.
   soverainetee, OF. sovrainet['e], F. souverainet['e].]
   The quality or state of being sovereign, or of being a
   sovereign; the exercise of, or right to exercise, supreme
   power; dominion; sway; supremacy; independence; also, that
   which is sovereign; a sovereign state; as, Italy was formerly
   divided into many sovereignties.

         Woman desiren to have sovereignty As well over their
         husband as over their love.              --Chaucer.

Source : WordNet®

sovereignty
     n 1: government free from external control
     2: royal authority; the dominion of a monarch [syn: {reign}]