Containers store skulls centrally in chambers (6)
I believe the answer is:
vaults
'chambers' is the definition.
(vault is a kind of chamber)
'containers store skulls centrally in' is the wordplay.
'containers store' becomes 'vats' (I can't justify this - if you can you should give a lot more credence to this answer).
'centrally' indicates the central letters.
'in' indicates putting letters inside.
The central letters of 'skulls' are 'ul'.
'vats' placed around 'ul' is 'VAULTS'.
Can you help me to learn more?
(Other definitions for vaults that I've seen before include "Burial chambers or strongrooms" , "Jumps over burial chambers?" , "Leaps with pole, or burial chambers" , "Cellars" , "Jumps using pole" .)