Magnificent bird released from US sporting event (6)
I believe the answer is:
superb
'magnificent' 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 superb that I've seen before include "First class" , "Of surpassing excellence" , "Dusty product of spider" , "choice" , "'Excellent, splendid (6)'" .)