Might this provide relief from piles?! (7,8)

'might' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'provide relief from piles?' is the wordplay.
I cannot quite see how this works, but
'provide' could be 'arm' (arming is a kind of providing) and 'arm' is found in the answer.
'from' could be 'in' (I've seen this in other clues) and 'in' is present in the answer.
This explanation may well be incorrect...

'this' is the link.

Can you help me to learn more?