Something for pain in bottom, for example, pushed up like this (9)
I believe the answer is:
analgesic
'something for pain in bottom for example pushed up like this' is the definition.
The definition suggests a singular noun which matches the answer.
'like this' is the wordplay.
I cannot quite see how this works, but
'like' could be 'sic' (I've seen this before) and 'sic' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for analgesic that I've seen before include "A medicine used to relieve pain" , "result is soothing" , "Pain-killer" , "Painkilling" , "medicament" .)