Bobby's agitated breathless brother (6)
I believe the answer is:
robert
This could be a double definition.
'bobby's' is the first definition.
Both the definition and answer are singular nouns.
Maybe there's an association between them I don't understand?
'agitated breathless brother' is the second definition.
The definition suggests a singular noun which matches the answer.
Can you help me to learn more?
(Other definitions for robert that I've seen before include "Founder of London's police force" , "-- Browning, nineteenth century poet" , "-- the Bruce" , "- Browning, Eng. poet" , "Name of three Scottish kings" .)