'Suzerainty' definitions:

Definition of 'suzerainty'

(from WordNet)
noun
The position or authority of a suzerain; "under the suzerainty of..."
noun
The domain of a suzerain

Definition of 'Suzerainty'

From: GCIDE
  • Suzerainty \Su"ze*rain*ty\, n. [F. suzerainet['e].] The dominion or authority of a suzerain; paramount authority. [1913 Webster]