The term 'curved course' can be summarized as an ARC, which is a three-letter word. An ARC is a curved line that forms part of the circumference of a circle or other shape. It is also used to describe a segment of a curve, such as a segment of a circle or ellipse. Arcs are commonly used in mathematics, engineering, and architecture. In architecture, arcs are often used to create arches, which are curved structures that span an opening. Arcs are also used in engineering to create curved paths for vehicles or other objects.