Regularly offer eldest some meals (5)
I believe the answer is:
feeds
'some meals' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being plural nouns.
Perhaps you can see an association between them that I can't see?
'regularly offer eldest' is the wordplay.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'offer'+'eldest'='offereldest'
The alternating letters of 'offereldest' are 'FEEDS'.
Can you help me to learn more?
(Other definitions for feeds that I've seen before include "Furnishes with food" , "Eats" .)