Ways in which a Greek island may be heard (5)
I believe the answer is:
roads
'ways' is the definition.
(I know this)
'a greek island may be heard' is the wordplay.
'a greek island' becomes 'rhodes' (Rhodes is a Greek island).
'may be heard' shows a homophone (sound like).
'rhodes' is a homophone of 'ROADS'.
'in which' acts as a link.
(Other definitions for roads that I've seen before include "Surfaced ways" , "an answer to all clues, initially" , "Highways" , "Area by shore where ships lie at anchor; streets" , "Open ways" .)