a small town of Ireland, county of Dublin, 8 miles N.N.E. of the capital, with which it is connected by railway. It stands on a peninsula of the same name, rising 567 feet above the sea, and forming the northern boundary of Dublin Bay. An artificial harbour, formed here at an expense of above one-third of a million sterling, is now almost choked up with sand, and is accessible only to vessels of small burden. Pop. (1851) 829, chiefly engaged in fishing.