GREAT-ISLAND, an island, in the parish of ARDCOLME, barony of SHELMALIER, county of WEXFORD, and province of LEINSTER, l½ mile (N. E.) from Wexford, on the north side of Wexford harbour; containing, in 1835, five families. It comprises 80 statute acres, and to the east is a smaller island, called Breast Island.