vavasour UK /ˈvavəsʊə/US /ˈvævəsʊɹ/ noun1 •(historical) a subvassal; someone holding their lands from a vassal of the crown rather than from the crown directlyFiddler’s Green is missing? That is passing strange, Lucien. He is, after all, vavasour of his own dominion. And always so… reliable. — 1989 formsvavasours