ciao

The Italian term for "Hi" or "Bye"

italian greeting word, either hello or goodbye

originally italian for hello or goodbye now common in southwest US and Mexico for goodbye.

an italian word meaning "goodbye" or "see you later"

What Italians say all day long while riding around on scooters.
(def. according to Eddie Izzard)

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.

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.