What is "bruree"

Bruree is a village in south-eastern County Limerick, Ireland, on the River Maigue. It takes its name from the nearby ancient royal fortress, the alternative name of which from the earliest times into the High Middle Ages was Dún Eochair Maigue or the Fortress on the Brink of the Maigue Other very old spellings and names include Brugh Righ, and Brugh Ri; literally, Brugh=Fort and Ri=King.