Expert at throwing and catching (7)
I believe the answer is:
juggler
'expert' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for juggler that I've seen before include "One keeping several things in the air" , "One performs tricks of manual dexterity" , "Circus performer" , "Balls-in-air entertainer" , "Conjuror" .)