System puts information to the bottom (8)
I believe the answer is:
database
'system' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'information to the bottom' is the wordplay.
'information' becomes 'data' (data are bits of information).
'to the bottom' becomes 'base' (base is a kind of bottom).
'data'+'base'='DATABASE'
'puts' is the link.
Can you help me to learn more?
(Other definitions for database that I've seen before include "Lots of info" , "Body of information" , "computer store" , "Computer's information store" , "information held by PC" .)