Explains in detail about being out of money (8)
I believe the answer is:
expounds
'explains in detail' is the definition.
(I've seen this in another clue)
'about being out of money' is the wordplay.
'about being' becomes 'exs' (I can't explain this - if you can you should give a lot more credence to this answer).
'out of' is an insertion indicator (some letters on the outside of others).
'money' becomes 'pound' (I've seen this before).
'exs' going around 'pound' is 'EXPOUNDS'.
Can you help me to learn more?
(Other definitions for expounds that I've seen before include "Sets forth or explains in detail" , "Interprets" .)