One of the services provided by a pneumatic pump? (8)
I believe the answer is:
airforce
'one of the services provided by a pneumatic' is the definition.
I know nothing about this answer so I cannot tell whether this works.
'pump?' is the wordplay.
I cannot quite understand how this works, but
'pump?' could be 'force' (force pump is a kind of pump) and 'force' is found in the answer.
The remaining letters 'air' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for airforce that I've seen is " service".)