Ø is a piece of land in the valley of the Nørreå in the eastern part of Jutland, Denmark. Its name means island (ø in the Danish language) and probably comes from the island-like approach to this piece of land, although it is completely landlocked and surrounded by meadows.
Ø is famous among lexicographers for the extreme brevity of its name: the single letter Øand for the people there.
Whilst the original meaning is not exactly verified, the name of the islet reflects Norwegians' (friendly) joking with the relatively small geographical size of Denmark proper. Alike Denmark, this islet is flat, small, and located oversea south of Bærum. The name predates 1814, when the personal union known as Denmark–Norway was dissolved. In a sale of land in the 1780s, it was mentioned that the sale included 'a little island called Denmark' (Danish:en lille ø kaldet Danmark).
Ness, Tore. 2008. Navn i fjorden: Oslo – Asker – Bærum. Oslo: Orion Forlag AS. ISBN 978-82-458-0847-6
Borgen, Per Otto. 2006. Asker og Bærum leksikon. Drammen: Forlaget for by- og bygdehistorie. ISBN 82-91649-10-3