A little lunch afore tea (3)
I believe the answer is:
cha
'tea' is the definition.
(cha is a type of tea)
'a little lunch afore' is the wordplay.
'a little' indicates a hidden word.
'CHA' can be found hidden inside 'lunch afore'.
(Other definitions for cha that I've seen before include "Tea (informal)" , "Tea (colloq.)" , "not allowed in ski lodge" , "Indian tea" , "Rosie Lee (slang)" .)