-əksə(r) noun
( plural ku kluxers )
Usage: usually capitalized both Ks
1. also ku klux pl ku kluxes : a member of a secret society advocating white supremacy and often using violent methods to intimidate Negroes in the South in the period following the Civil War
2. : a member of a secret fraternal group achieving prominence in many parts of the United States in the second decade of the 20th century and believed to confine its membership to native Protestant whites
wilder than the … stories about Catholics which are afloat among our own Ku Kluxers — New Republic