This might stop photos being taken of crude lap dances, once lawyer's disappeared (4,3)
I believe the answer is:
lens cap
'this might stop' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe you can see a link between them that I don't see?
'photos being taken of crude lap dances once lawyer's disappeared' is the wordplay.
I cannot really see how this works, but
'being' could be 'ens' (philosophical term for being or existence) and 'ens' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for lens cap that I've seen before include "protection for photographer" , "Camera cover" , "Aperture protector" .)