Define R.I.N.O.: A Republican In Name Only. Examples of the type of Republican covered under this definition are: Rep. Mark Kirk [R-IL] Rep. Ileana Ros-Lehtinen [R-FL] Rep. Michael Ferguson [R-NJ] Rep. Christopher Shays [R-CT] Rep. Michael Castle [R-DE] These five supposed Republican are nothing more than jackasses in elephant's clothing. Rep. Mark Kirk has introduced a bill, H.R. 6257: Assault Weapons Ban Reauthorization Act of 2008, which would "reinstate the Public Safety and Recreational Firearms Use Protection Act."