an arm of the sea in the county of Pembroke, Wales, has its entrance towards the S., but soon turns, and stretches E. for 12 miles, from Dale near its mouth to Pembroke Ferry, with a breadth varying from 1 to 3 miles. It is one of the best harbours in Europe, being sufficiently large to accommodate the whole British navy in good anchorage, and in a sheltered position. On account, however, of its distance from the Channel, and the inconvenience of its position, it is not of so much importance, either as a harbour for men-of-war or as a commercial port, as it would otherwise be. It has numerous smaller creeks running into the land, and the scenery is in some places very beautiful; the shores being lined with gently sloping hills. There is a lighthouse at the entrance called St Anne's light, near the village of Dale. In the reign of Henry IV., a French fleet anchored in Milford Haven, with a body of 1200 men, to assist Owen Glendwr; and here also Henry VII. landed, shortly before the battle of Bosworth Field.