'Suzerain' definitions:

Definition of 'suzerain'

From: WordNet
noun
A state exercising a degree of dominion over a dependent state especially in its foreign affairs

Definition of 'Suzerain'

From: GCIDE
  • Suzerain \Su"ze*rain\, n. [F., formed fr. sus above, L. susum, sursum (fr. sub under + versum, p. p. of vertere to turn), after the analogy of souverain, E. sovereign. See Sub-, and Verse.] A superior lord, to whom fealty is due; a feudal lord; a lord paramount. [1913 Webster]