Definition from Wiktionary, the free dictionary
Anglicized from Irish Gaelic Ó Riagáin "descendant of Riagán", a personal name possibly derived from ríodhgach "impulsive, furious".
- Of the administration of Ronald Reagan, U.S. President from 1981-1989.
- A surname.
- A male given name, occasional transferred use of the surname.
- A female given name of American usage since the 1970s.