One providing relief around tense religious festival (6)
I believe the answer is:
easter
This might be a double definition.
'one providing relief around tense' is the first definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'religious festival' is the second definition.
(I've seen this before)
Can you help me to learn more?
(Other definitions for easter that I've seen before include "Christian festival of celebration" , "Christian celebration at the end of Lent" , "A steer (anag.)" , "break" , "Card, egg or Island" .)