Devoured less than nine, say (3)
I believe the answer is:
ate
'devoured' is the definition.
(to devour is to eat)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for ate that I've seen before include "Worried" , "Munched" , "included in one's diet" , "Tea (anag.)" , "upset > Greek goddess" .)