Silver Edward kept in storage for a time (4)
I believe the answer is:
aged
'in storage for a time' is the definition.
I can't judge whether this definition defines the answer.
'silver edward' is the wordplay.
'silver' becomes 'Ag' (Ag is the chemical symbol for silver).
'edward' becomes 'Ed' (short for Edward).
'ag'+'ed'='AGED'
'kept' is the link.
Can you help me to learn more?
(Other definitions for aged that I've seen before include "Elderly" , "way over the hill" , "Ripened, matured" , "not a modern copy" , "not like a callow youth" .)