### Clue: Cat defeated at last by compiler keeping bird in box (4,7)
### Answer: SNOW LEOPARD 
 ### Explanation: Definition: Cat
 **Last letter of**(at last) "defeated " **placed after**(by, in an across clue) < { NEO(the compiler of this puzzle) **containing**(keeping) OWL(a night bird) } **contained in**(in) SPAR(to exchange blows;to box) } > .