Had a go in court? (5)
I believe the answer is:
tried
'had a go' is the definition.
(I've seen this in another clue)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for tried that I've seen before include "Proven by experience" , "Made an effort" , "Attempted" , "Put to the test" , "Tested" .)