California Code, Penal Code - PEN § 679.01

(a) “Crime” means an act committed in this state which, if committed by a competent adult, would constitute a misdemeanor or felony.

(b) “Victim” means a person against whom a crime has been committed.

(c) “Witness” means any person who has been or is expected to testify for the prosecution, or who, by reason of having relevant information, is subject to call or likely to be called as a witness for the prosecution, whether or not any action or proceeding has yet been commenced.