ARUNDEL, a borough and market town in Sussex, seated on the north-west side of the river Arun, over which there is a bridge. It had a harbour, wherein a ship of 100 ton burthen might ride; but the sea had ruined it so far, that, in 1733, an act passed for repairing it, and for erecting new piers, locks, &c. The castle, which gives the title of earl to its possessors, is seated on the east of the Tame, and is reputed to be a mile in compass. It sends two members to parliament; and is 55 miles south-west by south of London, and 10 miles east of Chichester. Arundel is the premier earldom in England, belonging to the illustrious family of Norfolk; and is the only title in England that goes along with the lands. W. Long. o. 25. N. Lat. 50. 45.