Catch new film (3)
I believe the answer is:
net
'catch' is the definition.
(netting is a kind of catching)
'new film' is the wordplay.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'film' becomes 'et' ().
'n'+'et'='NET'
(Other definitions for net that I've seen before include "Butterfly trap" , "Lattice" , "Trap; open-weave fabric" , "Overall; mesh" , "Snare or trap" .)