Consume repasts regularly (3)
I believe the answer is:
eat
'consume' is the definition.
(eating is a kind of consuming)
'repasts regularly' is the wordplay.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
The alternating letters of 'repasts' are 'EAT'.
(Other definitions for eat that I've seen before include "Gobble up" , "Worry" , "and 27: Be humiliated" , "Be corrosive" , "Consume (food)" .)