Poor cricketer's talk (6)
I believe the answer is:
rabbit
'talk' is the definition.
(rabbit can informally mean to talk)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for rabbit that I've seen before include "Furry rodent" , "Cony" , "Chatter; mammal" , "chat" , "Poor performer" .)