ourn
/ˈaʊən/ /ɑːn/(also our'n) Now English regional (midlands and southern ) and United States regional (chiefly south Midland, southern, and New England )
pronoun
= ours.
Origin
Late Middle English; earliest use found in The Wycliffite Bible (early version). Alteration of our, after mine, thine. Compare hern, his'n, theirn, yourn.