Source : Webster's Revised Unabridged Dictionary (1913)

Kuklux \Ku`klux"\, n.
   The name adopted in the southern part of the United States by
   a secret political organization, active for several years
   after the close of the Civil War, and having for its aim the
   repression of the political power of the freedmen; -- called
   also {Kuklux Klan}.