Crossword Genius

Talkative with hour spent backbiting (5)

Ross

I believe the answer is:

catty

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'backbiting' is the definition.
(I've seen this before)

I don't understand how the rest of the clue works.

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(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" .)

I've seen this clue in The Telegraph.
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