USHANT, an island on the coast of France, in the department of Finisterre and arrondissement of Brest. It is a lofty district, surrounded with steep rocks, but to navigators is an important point when approaching from the west. It is about eighteen miles in compass. It contains, besides the garrison, 1650 inhabitants, subsisting by agriculture and fishing. There is a light-house on the island. Long. 5. 9. 11. W. Lat. 48. 23. 8. N.