gyro2 Syllabification: (gy·ro)Pronunciation: /ˈyērō, ˈZHirō/Definition of gyro noun (plural gyros) North American a sandwich made with slices of spiced meat cooked on a spit, served with salad in pita bread. Origin: 1970s: from modern Greek guros 'turning'gyro in other Oxford dictionaries Definition of gyro in the British & World English dictionary