C.R.S. § 16-9-201
16-9-201. Definitions
16-9-201. Definitions. As used in this part 2, unless the context otherwise requires:
(1) "State" includes any territory of the United States and the District of Columbia.
(2) "Summons" includes a subpoena, order, or other notice requiring the appearance of a witness.
(3) "Witness" includes a person whose testimony is desired in any proceeding or investigation by a grand jury or in a criminal action, prosecution, or proceeding.