or TRISTLE DERDOT, a town of Ireland, in the county of Kildare. It is situated upon the river Lane, on the great southern road from Dublin to Cork. It was anciently a fortified town, and the residence of the kings of Leinster. Here are the remains of an ancient Franciscan abbey, and other antique ruins. There is a parish church, a Roman Catholic chapel, and a Quaker's meeting-house. It is distant 43 miles south-west of Dublin. The population amounts to about 1500.