a seaport town of France, capital of an arrondissement of the same name, in the department of Seine-Inferieure, situated at the mouth of the Arques on the English Channel, 32 miles N. of Rouen, and 92 miles from Paris; in N. Lat. 49° 55' 34", E. Long. 1° 4' 44". Pop. (1851) 16,216. The town proper is separated from its suburb of Pollet by the port, but communicates with it by means of a flying bridge. It extends about a mile along the coast; and to the westward on a chalk cliff stands the castle, an edifice of the fifteenth century, commanding both the town and harbour. The port, inclosed by two jetties, is large and secure, and admits vessels of 600 tons. It is however dry at low water, and the entrance is narrow and rather dangerous. The town is well built, the streets are wide and regular, and the houses mostly of brick, ornamented with balconies. It is well supplied with water by means of an aqueduct 3 miles in length; and has 68 public fountains, besides numerous private ones. The principal street runs parallel to the sea, from the harbour to the castle, and contains some fine shops and hotels. Dieppe is the seat of a court of original jurisdiction, and has a communal college, public library, navigation school, theatre, assembly rooms, and hospital. It is much resorted to in summer as a watering-place, and has a handsome bathing establishment. It is a place of a very extensive general trade, which has been much increased since the completion of the line of railway connecting it with Paris. Ship-building, and the herring and other fisheries are carried on; and there are manufactures of leather, lace, ivory articles, paper, &c. Dieppe has regular communication by steam-vessels between Brighton and Dieppe.

DIES Marchle was the day of congress or meeting of the English and Scotch, annually appointed to be held on the marches or borders, in order to adjust all differences between them.