NIO, an island of the Archipelago, situated between Naxi on the north, Armago on the east, Santerino on the south, and Sikino on the west, and about thirty-five miles in circumference. It is remarkable for nothing but Homer's tomb, which it is pretended is in this island, where he is said to have died in his passage from Samos to Athens. Long. 25. 35. E. Lat. 36. 43. N.