Some turn to gin (4)
I believe the answer is:
trap
'gin' is the definition.
(I've seen this before)
'some turn' is the wordplay.
'some' becomes 'part'.
'turn' says the letters should be written in reverse.
'part' in reverse letter order is 'TRAP'.
'to' is the link.
(Other definitions for trap that I've seen before include "ladder" , "Snaring device" , "website?" , "Cakehole (slang)" , "that may be sprung?" .)