Definition of "ciao"

[…] he excused himself, disappearing in a cloud of ciaos and operatic Italian.

2010, Robert V. Camuto, Palmento: A Sicilian Wine Odyssey, page 16

You hear more ciaos than hellos. Guests play bocce ball on the beach and dine on Italian and some Bahamian cuisine. Because of its strong Continental overlay, the cuisine is better here than at your typical Grand Bahama hotel.

2007, Darwin Porter, Danforth Prince, Bahamas For Dummies, page 196