Republicoon adjective 1noun 1forms 1 adjective1 •(vulgar, offensive) Republican.This sounds like republicoon mumbo jumbo to me. Probably written by one of Mista Lincoln's mexicoons or cubacoons, because of the reference to fast track. — 2002 noun1 •(vulgar, offensive) A Republican.WOW!!!! That's a great photo of my hero...got one with him and a rope and a republicoon or jewdough republicoon...:o)))))))))))))) — 2003 formsRepublicoons