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Anglicisation of an Irish surname Ó Cathasaigh (descendant of (a person named) Watchful). Also the nickname of an American folk hero, "Casey" Jones, from his home town Cayce in Kentucky.


Proper noun[edit]


  1. A surname​.
  2. A male given name.
  3. A female given name.
    • 2011 New York Times, July 7, 2011:
      Casey Anthony was sentenced on Thursday to a four-year jail term, the maximum possible, for lying to the police, but will be freed this month because she has spent nearly three years behind bars in Orlando, Fla., awaiting trial.