Its contents are valuable enough to make the trustee search (8,5)
I believe the answer is:
treasure chest
'its contents are valuable enough' is the definition.
I can't tell whether this definition defines the answer.
'make the trustee search' is the wordplay.
'make' indicates an anagram.
'trustee'+'search'='trusteesearch'
'trusteesearch' is an anagram of 'TREASURE-CHEST'.
'to' acts as a link.
Can you help me to learn more?
(Other definitions for treasure chest that I've seen before include "Store of valuable items" , "Typical pirate hoard" , "Box for valued items" , "Box for valuables" , "Hoard of valuables" .)