Plastic surgeon holding cold sponge (8)
I believe the answer is:
scrounge
'sponge' is the definition.
(I've seen this before)
'plastic surgeon holding cold' is the wordplay.
'plastic' indicates an anagram (plastic can mean easily moulded).
'holding' is an insertion indicator.
'cold' becomes 'c' (eg on taps).
'surgeon' with letters rearranged gives 'srounge'.
'srounge' going around 'c' is 'SCROUNGE'.
(Other definitions for scrounge that I've seen before include "Acquire by begging" , "Obtain (something) for free" , "Try to get hold of" , "Cur's gone (anag) - beg" , "Obtain by begging" .)