Chat in hospital kitchen (4)
I believe the answer is:
talk
'chat' is the definition.
(I've seen this in another clue)
'in hospital kitchen' is the wordplay.
'in' indicates a hidden word.
'TALK' can be found hidden inside 'hospital kitchen'.
(Other definitions for talk that I've seen before include "Idle gossip" , "Conversation" , "Gossip - lecture" , "Discussion" , "Utter" .)