Hold on to movie wrapping (9)
I believe the answer is:
clingfilm
'wrapping' is the definition.
(I know that clingfilm is a type of plastic wrap)
'hold on to movie' is the wordplay.
'hold on' becomes 'cling' (I've seen this before).
'to movie' becomes 'film' (synonyms).
'cling'+'film'='CLINGFILM'
(Other definitions for clingfilm that I've seen before include "Thin plastic wrap for food" , "Transparent wrapping material for food" , "Sticky wrapper" , "Plastic wrapping" , "Thin transparent plastic wrap" .)