Cuts short adult film star Jeff (8)
I believe the answer is:
abridges
'cuts' is the definition.
('abridge' can be a synonym of 'cut')
'adult film star jeff' is the wordplay.
I cannot really see how this works, but
'adult' could be 'a' (abbreviation) and 'a' is present in the answer.
The remaining letters 'bridges' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'short' is the link.
Can you help me to learn more?
(Other definitions for abridges that I've seen before include "Makes short work of" , "Shortens" .)