Deadly sin lions fall into (5)
I believe the answer is:
pride
'deadly sin' is the definition.
(I know that pride is a type of deadly sin)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for pride that I've seen before include "Vanity" , "conceit" , "sense of satisfaction" , "cause of swelling?" , "big cats" .)