noun

• The semi-legendary island of classical antiquity considered to represent the northernmost location in the inhabited world (the Ecumene).
• (historical) A nationalist and occultist group in Germany in the early 20th century, which included some of the founding members of the Nazi Party.
• The historical Eskimo culture extending from Alaska to Greenland between the 6th and 14th centuries.
• A settlement and airbase in northwestern Greenland established in 1910 by the Danish explorer Knud Rasmussen.
• The smaller lobe of the trans-Neptunian object Ultima Thule, a contact binary object.