CAL. CCP. CODE § 583.110 : California Code - Section 583.110

As used in this chapter, unless the provision or context otherwise requires:

(a) "Action" includes an action commenced by cross-complaint or other pleading that asserts a cause of action or claim for relief.

(b) "Complaint" includes a cross-complaint or other initial pleading.

(c) "Court" means the court in which the action is pending.

(d) "Defendant" includes a cross-defendant or other person against whom an action is commenced.

(e) "Plaintiff" includes a cross-complainant or other person by whom an action is commenced.

(f) "Service" includes return of summons.