Title: Cross-border flag for Ireland
Content:  The harp (or cláirseach) has long been a symbol of Ireland, being first recorded in a French roll of arms known as the Armorial Wijnbergen, which dates to the late 13th century. It first featured on Irish coins in the reign of Henry VIII around 1534. During the seventeenth and eighteenth century, the harp became adorned with progressively more decoration, ultimately becoming a "winged maiden". In the nineteenth century, the Maid of Erin, a personification of Ireland, was a woman holding a more realistic harp than the "winged maiden". This style of harp was then also used in Irish flags. The harp on the modern coat of arms of Ireland is modelled on the "Brian Boru" harp in the library of Trinity College, Dublin, as it appeared after an 1840s restoration.
Title: Harp
Content:  The harp has been used as a political symbol of Ireland for centuries. Its origin is unknown but from the evidence of the ancient oral and written literature, it has been present in one form or another since at least the 6th century or before. According to tradition, Brian Boru, High King of Ireland (died at the Battle of Clontarf, 1014) played the harp, as did many of the gentry in the country during the period of the Gaelic Lordship of Ireland (ended c. undefined 1607 with the Flight of the Earls following the Elizabethan Wars). In traditional Gaelic society every clan and chief of any consequence would have a resident harp player who would compose eulogies and elegies (later known as "planxties") 
Title: Irish traditional music
Content:   The harp is among the chief symbols of Ireland. The Celtic harp, seen on Irish coinage and used in Guinness advertising, was played as long ago as the 10th century. In ancient times, the harpers were greatly respected and, along with poets and scribes, assigned a high place amongst the most significant retainers of the old Gaelic order of lords and chieftains. Perhaps the best known representative of this tradition of harping today is Turlough Ó Carolan, a blind 18th century harper who is often considered the unofficial national composer of Ireland. Thomas Connellan, a slightly earlier Sligo harper, composed such well known airs as "The Dawning of the Day"/"Raglan Road" and "Carolan's Dream".  The native 
Title: Irish heraldry
Content:  The Coat of arms of Ireland is blazoned as Azure a harp Or, stringed argent – a gold harp with silver strings on a blue background. The harp, and specifically the cláirseach (or Gaelic harp), has long been Ireland's heraldic emblem. It appears on the coat of arms which were officially registered as the arms of the state of Ireland on 9 November 1945. The harp has been recognised as a symbol of Ireland since the 13th century.
Title: Harp
Content:  similar left-facing harp, based on the Trinity College Harp in the Library of Trinity College Dublin as its state symbol. It first appeared on the Great Seal of the Irish Free State, which in turn was replaced by the coat of arms, the Irish Presidential Standard and the Presidential Seal in the 1937 Constitution of Ireland. The harp emblem is used on official state seals and documents including the Irish passport and has appeared on Irish coinage from the Middle Ages to the current Irish imprints of euro coins. Irish companies such as Guinness since 1759, Harp Lager since 1960, Irish Independent since 1961 (originally in black but in green since 1972), and Ryanair since 1985 have all incorporated harps into their logos.
Title: Celtic harp
Content:  The Celtic harp is a triangular frame harp traditional to the Celtic nations of northwest Europe. It is known as cláirseach in Irish, clàrsach in Scottish Gaelic, telenn in Breton and telyn in Welsh. In Ireland and Scotland, it was a wire-strung instrument requiring great skill and long practice to play, and was associated with the Gaelic ruling class. It appears on Irish and British coins, the coat of arms of the Republic of Ireland, Montserrat, the United Kingdom and Canada as well as the flag of Montserrat.
Title: Harp
Content:  The harp is a stringed musical instrument that has a number of individual strings running at an angle to its soundboard; the strings are plucked with the fingers. Harps can be made and played in various ways, including standing or sitting and in orchestras or concerts. Its most common form is triangular in shape and made of wood. Some have multiple rows of strings and pedal attachments. Ancient depictions of harps were recorded in current day Iraq, Iran and Egypt and later in India and China. By medieval times harps had spread across Europe. Harps were found across the Americas where it was a popular folk tradition in some areas. Distinct designs also emerged from the African continent. Harps have symbolic political traditions and are often used in logos, including in Ireland.
Title: Harp
Content:  honour of the leader and chief men of the clan. The harp was adopted as a symbol of the Kingdom of Ireland on the coinage from 1542, and in the Royal Standard of King James VI and I in 1603 and continued to feature on all English and United Kingdom Royal Standards ever since, though the styles of the harps depicted differed in some respects. It was also used on the Commonwealth Jack of Oliver Cromwell, issued in 1649 and on the Protectorate Jack issued in 1658 as well as on the Lord Protector's Standard issued on the succession of Richard Cromwell in 1658. The harp is also traditionally used on the flag of Leinster. Since 1922, the government of Ireland has used 
Title: Coat of arms of Ireland
Content:  harp of gold) to the King of Ireland ("le Roi d'Irlande"). The harp, traditionally associated with the biblical King David, was a rare charge on medieval rolls and only two arms with a harp are listed in a collection of 19 early rolls. Triangular devices appeared on medieval Irish coinage by kings John and Edward I in the 12th and 13th centuries. These devices may have been crude harps or it may be that the harp developed from the use of triangles to distinguish Irish coins. The idea of a harp being the arms of Ireland may have originated as a reference to a fictional character, le 
Title: Harp
Content:  The harp is also used extensively as a corporate logo, by private companies and government organisations. The Irish beer Guinness uses a harp, facing right and less detailed than the version used on the state arms. Relatively new organisations also use the harp, but often modified to reflect a theme relevant to their organisation: Irish airline Ryanair uses a modified harp, and the Irish State Examinations Commission uses it with an educational theme. The harp appears in the logo for League of Ireland football team Finn Harps F.C., Donegal's senior soccer club and Scottish Premiership team Hibernian F.C. Other organisations in Ireland use the harp, but not always prominently; these include the National University of Ireland and the associated University College Dublin, and the Gaelic Athletic Association. In Northern Ireland the Police Service of Northern Ireland and Queen's University of Belfast use the harp as part of their identity. In Iraq, the football club Al-Shorta is nicknamed Al-Qithara, and has a harp on its logo.

Question: what is the meaning of the harp in ireland?
Answer: the arms of Ireland.