Turkey spotted feline stuff (7)
I believe the answer is:
trounce
'stuff' is the definition.
(both can mean to defeat)
'turkey spotted feline' is the wordplay.
'turkey' becomes 'tr' (abbreviation eg in internet addresses).
'spotted feline' becomes 'ounce' (another term for snow leopard).
'tr'+'ounce'='TROUNCE'
(Other definitions for trounce that I've seen before include "Beat roundly" , "Aged skip" , "Defeat heavily (in contest)" , "Wallop" , "Hammer" .)