Confidential Informant; Any individual under the direction of a police officer who furnishes information about criminal activity with or without compensation; works under direction of the department; different from other concerned citizens or complainants not working under department direction and not party to the investigation itself.

Someone who used to be a potential girlfriend/boyfriend, but no longer is.

per the criminal justice system, C.I. is an acronym for criminal informant

a slang term meaning ciggarrette used in street sub-vernacular native to the placer county area; more specifically, lincoln and roseville, CA

common pronounciations:
1.see-i
2.see-i-eeeee

A contraction between the two words, can and I, used when one is too lazy to say them separately, thus slurring the two together.

Similar to other contractions such as I'm (I am), wouldn't (would not), and they're (they are).

Other spellings include: kai, chi, ky, k'i.

"Ci" term being used for "Clean Invite" meaning sarcasm of not being invited to some place or where.

Short for cigarette.