This is the 12603rd most frequent Russian word.
конституционного
"Constitutional."
The word 'конституционного' is used as an adjective here, describing the type of law, indicating it relates to the constitution.
Текст конституционного закона был обсужден в парламенте.
The text of the constitutional law was discussed in the parliament.
'Конституционного' is applied as an adjective modifying 'права' (law), specifying it pertains to the constitution.
Он изучает вопросы конституционного права.
He studies issues of constitutional law.
In this sentence, 'конституционного' describes the type of court, showing its relation to constitutional matters.