Chatting about head covering (3)
I believe the answer is:
hat
'head covering' is the definition.
(I've seen this in another clue)
'chatting about' is the wordplay.
'about' indicates a hidden word (the clue goes around or about the answer).
'HAT' is hidden within 'chatting'.
(Other definitions for hat that I've seen before include "Headgear decoration" , "e.g. Pork pie" , "Headwear" , "Eg, derby" , "Cloche or fez?" .)