ciao
n.— «“All those who have chosen public safety as a career, corrections officers and police officers, your byword is “ciao,”” said the Rev. John S. Schiavone, adding the word is slang for “I am your servant.”…Gonzalez was remembered during eulogies…for beginning and ending every conversation with the word “ciao.”» —“Officers gather to mourn guard slain at Chino prison” by Paul Chavez Mercury News (San Jose, California) Jan. 18, 2005. (source: Double-Tongued Dictionary)