The term 'Site of Signing Magna Carta' can be summarized as Runnymede, a nine-letter word. Runnymede is an area in the English county of Surrey, located on the banks of the River Thames. It is most famously known as the site where King John of England sealed the Magna Carta in 1215, an agreement between the king and his subjects that established certain rights and liberties for the people of England.