The state of being under legal age; minority, the fact of being a minor.
c. 1608, John Donne, A Litany, stanza VI, "The Angels" in The Poems of John Donne, edited by Edmund Kerchever Chambers, London: Lawrence & Bullen, 1896, http://www.bartleby.com/357/111.html
And since this life our nonage is, / And we in wardship to Thine angels be, / Native in heaven's fair palaces / Where we shall be but denizen'd by Thee;
noun
(obsolete, rare) A payment formerly made to the parish clergy upon the death of a parishioner, consisting of a ninth of the movable goods.