look up any word, like hipster:
 
1.
The Italian term for "Hi" or "Bye"
Ciao Bella - Hi Beautiful/Bye Beautiful
by JVisconti October 04, 2003
 
2.
italian greeting word, either hello or goodbye
Ciao bella - Hello girlfriend
Ciao bello - goodbye boyfriend
by Anonymous September 11, 2003
 
3.
Ciao was originally an Italian word meaning 'hello' or 'goodbye', but culturally diffused into various European nations with Romance languages.

In the United States, it is commonly used by Spanish-speakers and French-speakers, in addition to Italian-speakers.

When "ciao" is used by Americans, instead of looking sophisticated, they look like retards. So, if you're American.... just don't say it.
Spanish: Bueno, Mamá. Ya me voy. Ciao!
French: Alors, Maman. Je me vais. Ciao!
(OK, Mom. I'm leaving. Bye)

An American saying Ciao: Ciao, darling. I'm a prick because i say 'Ciao' to sound sophisticated
by JJJDDD June 07, 2006
 
4.
an italian loan word meaning goodbye. if said by anyone who isn't from italy, it actually means, i think i'm better than you and act pretentious all the time because i think i'm much more interesting than i am. it usually is an invitation to punch them in the face before they leave so long as it isn't used ironically.
oh, i forwarded you the MOST interesting article from the latest issue of harper's. Gotta run, i'm late for my book club. ciao.
by king kong NINJA April 20, 2004
 
5.
originally italian for hello or goodbye now common in southwest US and Mexico for goodbye.
tengo ir, ciao
by granster May 22, 2003
 
6.
Pronounced like italian word for goodbye. It stands for a business practice of "Communication, It's An Option". Used by business for lack of communication to other departments within the corp. world.
Kevin: Hey Dave, did you get the memo during your meeting that all cars coming in to service today get free t-shirts?
David: C.I.A.O that memo, Kevin. Now we have run out of shirts since no one bothered to tell us to get extras.
by bmwgnome December 14, 2009
 
7.
an italian word meaning "goodbye" or "see you later"
Ciao baby!
by SoftVelvet April 13, 2003