Consumed more than seven, say (3)
I believe the answer is:
ate
'consumed' is the definition.
(to eat is to consume food)
'more than seven say' is the wordplay.
'more than seven' becomes 'eight'.
'say' shows a homophone (sound like).
'eight' sounds like 'ATE'.
(Other definitions for ate that I've seen before include "included in one's diet" , "mischief-maker" , "Ingested" , "Tea (anag.)" , "Devoured" .)