Like a big cat (7)
I believe the answer is:
leonine
'like a big cat' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for leonine that I've seen before include "Papal" , "Beastly" , "As a maned animal" , "Relating to a carnivore or to certain popes" , "like one with largest share" .)