/ ˈ j ɪər oʊ / yee-roh , / ˈ dʒ aɪ r oʊ / , [1] / ˈ ʒ ɪər oʊ / ; [2] Greek : γύρος, lit. 'turn') is a dish of meat roasted on a vertical spit, generally served as a sandwich, also called gyros , with tomato