One serving a meal around the dining centre (6)
I believe the answer is:
menial
'one serving' is the definition.
(thesaurus)
'a meal around the dining centre' is the wordplay.
'around' is an insertion indicator.
'centre' indicates the central letters.
The centre of 'dining' is 'ni'.
'meal' placed around 'ni' is 'MENIAL'.
(Other definitions for menial that I've seen before include "Servile, low" , "Requiring little skill; lacking prestige" , "Subservient, lowly" , "Servile of lowly" , "'Humble, lowly, work say (6)'" .)