Testing a vino I fancy for research (13)
I believe the answer is:
investigation
'research' is the definition.
(investigation is a kind of research)
'testing a vino i fancy' is the wordplay.
'fancy' indicates an anagram.
'testing'+'a'+'vino'+'i'='testingavinoi'
'testingavinoi' is an anagram of 'INVESTIGATION'.
'for' is the link.
(Other definitions for investigation that I've seen before include "Analysis" , "Probe" , "Examination" , "Inquiry" , "fact-finding search" .)