Republican

Republican could mean:

• The form of government known as a republic
• Groups wanting to abolish a monarchy, for example, the Australian Republican Movement and the British republican movement (see Republicanism)
• A political party such as:
  • Republican Party (United States) sometimes referred to as the GOP (Grand Old Party)
  • Republican Party (France)
  • Republican Party (Liberia)
  • Republican Party (Malawi) part of the Mgwirizano Coalition
  • The Republicans (Germany)
  • Republican Party of São Paulo
  • Fianna Fáil in Ireland–also called the Republican Party
  • Vanuatu Republican Party
• Supporters of Irish Republicanism
• Institutions or supporters of particular historical republics, including:
  • the ancient Roman Republic
  • the Second Spanish Republic during the Spanish Civil War
  • various French Republics, most notably the French First Republic established during the French Revolution
• The Republican River of Colorado, Nebraska, and Kansas, USA.

The Simple English Wiktionary has a definition for: Republican and republican.