Where the islander lives for song? (5)
I believe the answer is:
islay
'where the islander' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'lives for song?' is the wordplay.
'lives' becomes 'is' ('be' can be a synonym of 'live').
'for' is a charade indicator (letters next to each other).
'song?' becomes 'lay' (lay is a kind of song).
'is'+'lay'='ISLAY'
Can you help me to learn more?
(Other definitions for islay that I've seen before include "Argyll island" , "Inner Hebridean island" , "Inner Hebridean isle noted for whisky" , "Island noted for whisky" , "Island of the Inner Hebrides" .)