A surname from Irish.
Casey — Definition and meaning
• A male given name transferred from the surname.
• A female given name transferred from the surname.
• A placename: A suburb of Canberra, Australian Capital Territory, Australia, named after Richard Casey, Baron Casey. A local government area in eastern Melbourne, Victoria, Australia, also named after Baron Casey; in full, the City of Casey. An electoral division in Victoria. A city in Clark County and Cumberland County, Illinois, United States. A minor city in Adair County and Guthrie County, Iowa, United States. A town in Washburn County, Wisconsin, United States. A township in Timiskaming District, Ontario, Canada, named after George Elliott Casey. Ellipsis of Casey Station; a research station in Wilkes Land in Antarctica. Ellipsis of Casey County.
• A suburb of Canberra, Australian Capital Territory, Australia, named after Richard Casey, Baron Casey.
• A local government area in eastern Melbourne, Victoria, Australia, also named after Baron Casey; in full, the City of Casey.
• An electoral division in Victoria.
• A city in Clark County and Cumberland County, Illinois, United States.
• A minor city in Adair County and Guthrie County, Iowa, United States.
• A town in Washburn County, Wisconsin, United States.
• A township in Timiskaming District, Ontario, Canada, named after George Elliott Casey.
• Ellipsis of Casey Station; a research station in Wilkes Land in Antarctica.
• Ellipsis of Casey County.
• Ellipsis of Planned Parenthood v. Casey, a 1992 U.S. Supreme Court ruling that reaffirmed the right to having an abortion; and reaffirmed the existence of a right to privacy under due process following the 14th Amendment.
The importance of Casey
Casey appears in U.S. legal practice across multiple practice areas. Knowing what it means — and when it applies — can determine the outcome of motions, filings, and negotiations. For non-lawyers, the value of looking up a precise definition is that legal terms often carry meanings that differ from everyday usage; relying on the common meaning can lead to costly missteps.
How Casey is applied
In practice, Casey is invoked when parties, judges, or attorneys need to identify the legal status of an issue, the rights of those involved, or the procedural step required next. The definition shown above is sourced from Wiktionary , which is widely cited in U.S. legal practice. Because U.S. law is jurisdictionally layered — federal, state, and sometimes local — the precise application of the term can vary by court, so check the controlling authority for your specific case.