Eat a part up in town (9)

'town' is the definition.
(deloraine matches up with the definition town)

'eat a part up in' is the wordplay.
'eat' becomes 'dine' (to dine is to eat a meal).
'part' becomes 'role' (eg a theatrical role).
'up' is a reversal indicator (in down clue: letters go upwards).
'in' indicates putting letters inside.
'a'+'role'='arole'
'arole' back-to-front is 'elora'.
'dine' enclosing 'elora' is 'DELORAINE'.