Dirty old man possibly put inside by Stormy (8)
I believe the answer is:
blustery
'dirty old man' is the definition.
'blustery' can be an answer for 'dirty' (thesaurus). I am not certain of the 'old man' bit.
'put inside by stormy' is the wordplay.
'put inside' means one lot of letters goes inside another.
'stormy' becomes 'luster' (I can't explain this - if you can you should believe this answer much more).
'by' placed around 'luster' is 'BLUSTERY'.
'possibly' is the link.
Can you help me to learn more?
(Other definitions for blustery that I've seen before include "Spasmodically windy" , "Blowing strongly but unevenly" , "Somewhat windy" , "Sly brute (anag)" , "Like wild weather" .)