Dined in steakhouse at Enfield (5)
I believe the answer is:
eaten
'dined' is the definition.
(having had a meal)
'in steakhouse at enfield' is the wordplay.
'in' indicates the answer is hidden within the clue.
'EATEN' can be found hidden inside 'steakhouse at enfield'.
(Other definitions for eaten that I've seen before include "demolished, possibly" , "Taken into the body as food" , "Put away" , "having taken courses?" , "absorbed in the system" .)