Ku Klux noun 1Ku-Klux verb 1forms 4 noun1 •A member of the Ku Klux Klan.[…] there was Billy McKinney, I don't know whether he was a Ku Klux or not; I suppose the reason why I did not say I would not join the Ku Klux was because I hadn't sense enough. — 1872 Ku-Klux verb1 •(old-fashioned) To lynch (a person) as part of Ku Klux Klan activities.Caldwell was taken up — two Caldwells — on a charge of Ku-Kluxing. They proved that they were twenty miles away from the scene of operation. — 1872 formsKu-Kluxed · Ku-Kluxing · Ku-Kluxes · Ku Kluxes