Island where corset abandoned (6)
I believe the answer is:
tresco
'island' is the definition.
(Cornish island)
'corset abandoned' is the wordplay.
'abandoned' indicates anagramming the letters (the original order is abandoned).
'corset' anagrammed gives 'TRESCO'.
'where' is the link.
(Other definitions for tresco that I've seen before include "Another Scilly Isle" , "Second largest of the Scilly Isles" , "Island in the Isles of Scilly well-known for its gardens" .)