A break when cardinals regularly feast? (9)
I believe the answer is:
elevenses
'a break' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for elevenses that I've seen before include "Coffee time?" , "Tea and biscuits, perhaps" , "Morning snack" , "energy getting second break" , "tenses found immediately before this?" .)