1.A one-man security force, similar in meaning to law dog, but more on the fringe of the law. Zivics are known for daring feats of insanity in various environments.
2. A player.
(Noun): That Zivic just regulated on those guys.
(Verb): He Zivicked down that icy slope, what a madman!
(Verb 2.): Girl, don't get involved, he's a zivic.