Words

vav

vavasour

vavasor

,

vavassor

(ˈvævəˌsɔːPronunciation for vavassor)
or

vavasour

(ˈvævəˌsʊəPronunciation for vavasour)
  noun
    (in feudal society) the noble or knightly vassal of a baron or great lord who also has vassals himself
  [C13: from Old French vavasour, perhaps contraction of Medieval Latin vassus vassōrum vassal of vassals; see vassal]