Custom from Turkey: one daughter gets wasted in annexe (9)
I believe the answer is:
tradition
'custom' is the definition.
(I've seen this before)
'turkey one daughter gets wasted in annexe' is the wordplay.
'turkey' becomes 'tr' (I've seen this in other clues).
'one daughter' becomes 'd'.
'gets wasted in' is a deletion indicator.
'annexe' becomes 'addition' (I've seen this before).
'addition' with 'd' taken away is 'adition'.
'tr'+'adition'='TRADITION'
'from' acts as a link.
(Other definitions for tradition that I've seen before include "Inherited pattern of thought or action" , "Practice of long standing" , "Routine" , "customary behaviour" , "Transmitted customs" .)