Father read about procession (6)
I believe the answer is:
parade
'procession' is the definition.
(I know that parade is a type of procession)
'father read about' is the wordplay.
'father' becomes 'pa' (pa can mean dad or father).
'about' indicates an anagram.
'read' is an anagram of 'rade'.
'pa'+'rade'='PARADE'
(Other definitions for parade that I've seen before include "Public walk or march" , "Ostentation" , "Public procession or ceremonial march" , "'Procession of bands, floats, etc (6)'" , "Public procession as on St Patrick's Day" .)