Wine bringing hint of shakiness into part of eye (7)
I believe the answer is:
retsina
'wine' is the definition.
(type of Greek wine)
'hint of shakiness into part of eye' is the wordplay.
'hint of' suggests taking the first letters (the smallest possible amount of the word).
'into' means one lot of letters goes inside another.
'part of eye' becomes 'retina' (eyes have retinas).
The initial letter of 'shakiness' is 's'.
's' inserted inside 'retina' is 'RETSINA'.
'bringing' acts as a link.
(Other definitions for retsina that I've seen before include "Flavoured Greek white wine - nastier brand" , "Greek wine - nastier sort" , "Greek resin-flavoured wine" , "Nastier (anag) - white (or rose) wine" , "Type of Greek wine" .)