Taking afternoon off, make for island (5)
I believe the answer is:
crete
'island' is the definition.
(Greek island)
'taking afternoon off make' is the wordplay.
'taking' is an insertion indicator.
'afternoon off' becomes 't' (I can't explain this - if you can you should believe this answer much more).
'make' becomes 'cree' (I've seen this in another clue).
't' put into 'cree' is 'CRETE'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for crete that I've seen before include "Herakleion its big port" , "Greek island, site of the Minoan civilisation" , "Large island south of Greece, once ruled by Minoans" , "Major island south of Greece" , "Large Greek island" .)