Turning up a little information (4)
I believe the answer is:
data
'information' is the definition.
(data are bits of information)
'turning up a little' is the wordplay.
'turning up' says the letters should be written backwards.
'a little' becomes 'a tad' (a tad means a little or somewhat).
'atad' back-to-front is 'DATA'.
(Other definitions for data that I've seen before include "Gathered stats" , "Organised information" , "Facts and figures as fed to computers (4)" , "Collection of facts, information" , "Listed facts" .)