Webster's Revised Unabridged Dictionary · 1913

Vavasor

Vavasor , noun

[Old English vavasour, Old French vavassor, vavassour, French vavasseur, Late Latin vavassor, probably contr. from vassus vassorum vassal of the vassals. See Vassal.]

(Feud. Law) The vassal or tenant of a baron; one who held under a baron, and who also had tenants under him; one in dignity next to a baron; a title of dignity next to a baron. — Chaucer
A worthy vavasour. — Burrill
Vavasours subdivide again to vassals, exchanging land and cattle, human or otherwise, against fealty. — Motley