Secretly stores twisted ash rod (6)
I believe the answer is:
hoards
'secretly stores' is the definition.
'hoards' can be an answer for 'stores' (hoarding is a kind of storing). I am not certain of the 'secretly' bit.
'twisted ash rod' is the wordplay.
'twisted' indicates anagramming the letters.
'ash'+'rod'='ashrod'
'ashrod' anagrammed gives 'HOARDS'.
Can you help me to learn more?
(Other definitions for hoards that I've seen before include "Accumulates" , "amounts of treasure" , "Stores up treasure" , "Amasses" , "Squirrels away" .)