An island to which John was banished by one of the Roman emperors, and where he received the Revelation. Revelation 1:9 . It is a rocky island in the Ægean Sea, about 37 15' N, and is peculiarly rugged, bare, and desolate. On the hill to the south is a monastery called 'John the Divine.' In the ascent is a cave or grotto in which John is said to have written the Revelation.