How some allegations can be made, in court (5)
I believe the answer is:
legal
'made in court' is the definition.
The answer and definition are different parts of speech. However, adjectives and past participle verbs sometimes mean the same thing.
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for legal that I've seen before include "Permissible" , "right" , "Legitimate" , "Rightful" , "Authorized" .)