Island routes announced (6)
I believe the answer is:
rhodes
'island' is the definition.
(Greek island)
'routes announced' is the wordplay.
'routes' becomes 'roads' (a road is a route or path).
'announced' indicates a 'sounds like' (homophone) clue.
'roads' sounds like 'RHODES'.
(Other definitions for rhodes that I've seen before include "Cycled round hot Society Island" , "Greek island, ten miles off the Turkish coast" , "British financier and coloniser in southern Africa, d. 1902" , "Hordes visit the Greek island" , "Shored (anag) - Greek island" .)