A subpoena duces tecum is a court order requiring the person named in it to produce certain books, papers, or other tangible things for the court.
(plural circlets) 1  A crown without arches or a covering. 2  A small circle. 3  A round body; an orb. ( UK, dialect) A circular piece of wood put under a dish at table.
A circle is a type of line. Imagine a straight line segment that is bent around until its ends join. Then arrange that loop until it is exactly circular-that is, all points along that line are the same distance from a center point. There is a difference between a circle and a disk.