Definition - What does Constitutional Court mean?
A constitutional court is a court that is specifically protected within the Constitution.
Any court that is described by an article of the Constitution, such as Article III, could be considered as a constitutional court, although commonly it is the appellate court that is referred to in this context.
Justipedia explains Constitutional Court
The idea of a constitutional court is referred to in Article III of the Constitution specifically, and at times, this court is instead referred to as an Article III court. Included in these courts are the Supreme Court, the U.S. Court of International Trade, the Federal Court of Appeal, the U.S. district courts and the U.S. courts of appeals.