coupé-jeté en tournant is a classical ballet term that is usually called “coupé jeté.” It is an intermediate step that is basically a split jeté with a turn in between.
A coupé jeté is usually done as a series en menège, or in a circle, but can also be done as a single step.
As with many compound steps, a video or picture demonstration is much better than trying to confuse someone with a written description. We’ll be working on that and get it posted as soon as its ready!