Survey of certain males in Turkey, say (11)
I believe the answer is:
measurement
'survey' is the definition.
(thesaurus)
'certain males in turkey say' is the wordplay.
'certain' becomes 'sure' (synonyms).
'males' becomes 'men' (man is a kind of male).
'in' is an insertion indicator.
'turkey say' becomes 'meat' (turkey is a kind of meat).
'sure'+'men'='suremen'
'suremen' going into 'meat' is 'MEASUREMENT'.
'of' is the link.
(Other definitions for measurement that I've seen before include "Mensuration" , "What a ruler may give" , "Dimension" , "Size" .)