Puma rival (4)
I believe the answer is:
nike
'puma rival' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for nike that I've seen before include "Greek goddess, personification of victory" , "Goddess of victory - clothing company" , "Victoria" , "Greek winged goddess of victory, and sports goods logo" , "bringer of victory" .)