A quick definition of decreet:

Decreet is an old Scottish legal term that means a court's final decision or judgment. It is similar to the modern term "decree." There are different types of decreets, such as decreet absolvitor (a judgment for the defendant), decreet condemnator (a judgment for the plaintiff), and decreet arbitral (an arbitration award). A divorce decree is a final judgment that ends a marriage and resolves property and child custody issues.