Malay Archipelago island (5)
I believe the answer is:
timor
'malay archipelago island' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for timor that I've seen before include "East Indies island NW from Darwin" , "SE Asian island" , "East . . . . ., became independent of Indonesia in 2002" , "Indonesian island" , "Eastern island" .)