NornPronunciation: /nɔːn/Definition of Norn noun [mass noun] a form of Norse formerly spoken in Orkney and Shetland but largely extinct by the 19th century. adjective relating to Norn. Origin:from Old Norse norrœn 'Norn, northern', from northr 'north'Norn in other Oxford dictionaries Definition of Norn in the US English dictionary