The arrogance of lions (5)
I believe the answer is:
pride
I believe this clue is a double definition.
'the arrogance' is the first definition.
(thesaurus)
'lions' is the second definition.
(pride is the collective noun for a group of lions)
'of' acts as a link.
(Other definitions for pride that I've seen before include "'. . . . goes before a fall'" , "Excessive self-esteem" , "Deadly sin (of lions?)" , "conceit" , "Vanity" .)