Greco-Roman Syllabification: (Gre·co-Ro·man)Pronunciation: /ˈgrekō/ (also chiefly BritishGraeco-Roman)Definition of Greco-Roman adjective of or relating to the ancient Greeks and Romans. denoting a style of wrestling in which holds below the waist are prohibited. Greco-Roman in other Oxford dictionaries Definition of Greco-Roman in the British & World English dictionary