Start cold drink outside (5)
I believe the answer is:
wince
'start' is the definition.
(wince is a kind of start)
'cold drink outside' is the wordplay.
'cold' becomes 'c' (eg on taps).
'drink' becomes 'wine' (wine is an alcoholic drink).
'outside' means one lot of letters goes inside another.
'c' going into 'wine' is 'WINCE'.
(Other definitions for wince that I've seen before include "React involuntarily from pain or embarrassment" , "Involuntary grimace of pain" , "Flinch with pain" , "Cringe" , "Visibly react to pain" .)