No dreamer about a catalogue (7)
I believe the answer is:
realist
'no dreamer' is the definition.
(I've seen this in another clue)
'about a catalogue' is the wordplay.
'about' becomes 'rea' (I've seen this in other clues).
'a catalogue' becomes 'list' (a catalogue is a list of items).
'rea'+'list'='REALIST'
(Other definitions for realist that I've seen before include "One without illusions" , "Non-dreamer?" , "One who sees things in a practical way" , "Someone who's pragmatic" , "One seeing things as they are" .)