British graduate brought in special information document - it retains some point (8)
I believe the answer is:
scabbard
'it retains some point' is the definition.
(material covering the point of a blade)
'british graduate brought in special information document' is the wordplay.
'british' becomes 'b' (abbreviation e.g. in 'BBC').
'graduate' becomes 'ba'.
'brought in' means one lot of letters goes inside another.
'special' becomes 's' (common abbreviation as in Special Air Service).
'information document' becomes 'card'.
'b'+'ba'='bba'
's'+'card'='scard'
'bba' put into 'scard' is 'SCABBARD'.
(Other definitions for scabbard that I've seen before include "protection on the side" , "It keeps food off clothes" , "One holding a sword" , "Case for a sword" , "Sword holder" .)