As used in this part, the following definitions apply:
(1) "Criminal street gang" means any ongoing organization, association, or group of three or more persons, whether formal or informal, having as one of its primary activities the commission of one or more of the criminal acts enumerated in 45-8-405, having a common name or common identifying sign or symbol, and whose members individually or collectively engage in or have engaged in a pattern of criminal street gang activity.
(2) "Pattern of criminal street gang activity" has the meaning provided in 45-8-405.