or our'n

[ ouuh rn, ou-ern or, often, ahrn ]
/ aʊərn, ˈaʊ ərn or, often, ɑrn /

pronoun Nonstandard.

Origin of ourn

1350–1400; Middle English (South and Midlands) ouren, ourn, equivalent to oure our + -n (by analogy with my, mine; thy, thine)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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