Talkative with hour spent backbiting (5)
I believe the answer is:
catty
'backbiting' is the definition.
(I've seen this before)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for catty that I've seen before include "It's like a queen" , "Bitchy as a feline" , "Mean and spiteful" , "Spiteful in feline way" , "Malicious" .)