a town of Scotland, in Mid-Lothian, six miles south-east of Edinburgh; W. Long. 2. 20. N. Lat. 55. 50. It is the principal residence of the duke of Buccleugh, who has here a noble house and extensive parks. In this house, which at the time was the head quarters of General Monk, the restoration of Charles II. was planned.—The duke's eldest son has the title of Earl of Dalkeith. Here is a considerable corn market weekly on Thursdays, which supplies in part both Edinburgh and Glasgow.