Record one volume, for example (7)
I believe the answer is:
epitome
'example' is the definition.
(epitome is a kind of example)
'record one volume' is the wordplay.
'record' becomes 'ep'.
'one' becomes 'i' (Roman numeral).
'volume' becomes 'tome' (I've seen this before).
'ep'+'i'+'tome'='EPITOME'
'for' is the link.
(Other definitions for epitome that I've seen before include "Typical example, prototype" , "Something embodying perfectly a stated quality or idea" , "Essence or embodiment" , "Perfect example of a quality" , "Ideal example" .)