Journalist going in for a felt hat (6)
I believe the answer is:
fedora
'felt hat' is the definition.
('fedora' can be a synonym of 'felt hat')
'journalist going in for a' is the wordplay.
'journalist' becomes 'ed' (short for editor).
'going in' means one lot of letters goes inside another.
'ed' going into 'for' is 'fedor'.
'fedor'+'a'='FEDORA'
(Other definitions for fedora that I've seen before include "Headwear" , "Hat for RAF doe" , "Cover for head" , "Felt hat, dented lengthwise" , "Headgear" .)