Ossi

Ossi is a Finnish and Estonian short form of names beginning with the Germanic element os, meaning "god," most commonly used as a diminutive of Oskar or Oskari. The element derives from the Old Norse áss, referring to the Æsir gods, combined in Oskar with the element geirr, meaning "spear." It has been a familiar given name in Finland throughout the twentieth century, functioning both as an independent name and as a pet form. Related names include Oskari, Oskar, and the broader family of Germanic os-names such as Osmo and Oswald.