Denbigh, a municipal and parliamentary borough, market and county town of Denbighshire, North Wales, built on an eminence near the centre of the vale of Clwyd, 22 m. W. of Chester, and 180 m. N. W. of London; pop. of the borough in 1871, 6,322. The principal edifices are three Anglican churches, one Catholic and four dissenting chapels, a town hall, grammar school, lunatic asylum, and a spacious market hall. The shoe and leather trade is the main support of the town, but Denbigh is best known as a pleasant spot for retirement. Denbigh castle, a magnificent edifice, parts of which are well preserved, is supposed to have been built by Henry Lacy, earl of Lincoln, who received the lordship of this place from Edward I. Edward IV. was besieged in it by the army of Henry VI., and Charles I. took refuge here after the battle of Rowton Heath in 1645. At the close of the civil war it was garrisoned by royalists, but after a siege of two months surrendered to the parliamentarians by order of the king. A great part of its defences was blown up after the restoration.