All-Ireland

All-Ireland is an attributive which emphasises the whole island of Ireland. It contrasts with expressions such as the Republic or Northern Ireland, which apply only to those specific jurisdictions on the island.

Many but far from all sports are organised on an all-Ireland basis.

"All-Ireland" is often used as an abbreviation of All-Ireland Championship, held by sports organised on All-Ireland basis. In particular:

Many sports are organised on an all-Ireland basis, for example American football, basketball, boxing, cricket, curling, Gaelic games, hockey, golf, lawn bowls, rugby league and rugby union, in which case the international team is usually referred to simply as "Ireland". Others are organised primarily on an all-Ireland basis, but with both "Ireland" and "Great Britain" international teams, in which case players from Northern Ireland may opt for either - these include tennis, swimming, athletics and any events at the Olympics. Some others have separate Northern Ireland and Republic of Ireland organisations and teams, including notably football and snooker.

Similarly, the term may be used in reference to annual competitions in certain traditional music and art forms:

...
Wikipedia