Small, small notes (7)
I believe the answer is:
minutes
'notes' is the definition.
(minute is a kind of note)
'small small' is the wordplay.
'small' becomes 'minute' ('minute' can be similar in meaning to 'small').
'small' becomes 's' (abbreviation - e.g. clothes size).
'minute'+'s'='MINUTES'
(Other definitions for minutes that I've seen before include "Records" , "summary" , "Recorded notes of a meeting" , "Record of a meeting's decisions" , "Units of time" .)