A goblin is a legendary evil or mischievous creature, described as a grotesquely evil or evil -like phantom. They are attributed with various (sometimes conflicting) abilities, temperaments and appearances depending on the story and country of origin. In some cases, goblins have been classified as constantly annoying little creatures somewhat related to the brownie and gnome.
According to The Concise Oxford Dictionary of Current English, the name is probably derived from the Anglo-Norman gobelin (which was rendered, in Medieval Latin, as gobelinus, Norman goublin), which is probably a diminutive of Gobel, a name related to the word kobold (a German sprite). In addition, there also exist various other alternative spellings of the word goblin, including: Gobblin, gobeline, gobling, goblyn, gobelinus (Medieval Latin).
Hiisi, folletto, duende, tengu, Menninkäinen and kallikantzaroi are often translated into English as 'goblins'. The Erlking and Billy Blind are sometimes called goblins. 'Goblin' is often used as a general term to mean any small mischievous being.