or LERO, a small island of the Grecian Archipelago, belonging to Turkey; situate off the W. coast of Anatolia, opposite the Gulf of Mandelwyn, N. Lat. 37° 10', and E. Long. 26° 50'. It is irregular in shape, and mountainous, about 9 miles in length from S.E. to N.W., and from 1½ to 4 miles broad. The valleys are very fertile, and the harbours numerous and excellent. The chief products are grain, olives, wax, honey, and wool. The town of Lero is situate on a bay on the E. side of the island. Leros was originally colonized by Milesians about 500 B.C., and continued under the government of Miletus until that city fell into the hands of the Romans. The goddess Artemis Parthenos had a temple here, the site of which is said to be now occupied by a convent which bears her name. Pop. about 2000.