Where to ache to take a powder? (7)
I believe the answer is:
stomach
'take a powder?' is the definition.
'stomach' can be an answer for 'take' (I've seen this before). I'm not certain of the 'a powder?' bit.
'where to ache' is the wordplay.
I cannot really see how this works, but
'to' is within the answer.
This explanation may well be incorrect...
'to' acts as a link.
Can you help me to learn more?
(Other definitions for stomach that I've seen before include "Internal organ" , "Could Mac host this organ?" , "stand" , "Breadbasket (informal)" , "Appetite for food" .)