Web producer's film follows bowler (9)
I believe the answer is:
spinneret
'web producer's' is the definition.
The definition suggests a singular noun which matches the answer.
'film follows bowler' is the wordplay.
'film' becomes 'ET' (E.T. the Extra-Terrestrial).
'follows' means one lot of letters go next to another.
'bowler' becomes 'spinner' (a spinner is a kind of bowler in cricket).
'et' put after 'spinner' is 'SPINNERET'.
Can you help me to learn more?
(Other definitions for spinneret that I've seen before include "Dispenser" , "Source of web" , "Silk distributor" , "Spider's organ producing gossamer" , "source of silk" .)