olioPronunciation: /ˈəʊlɪəʊ/Definition of olio noun (plural olios) 1a highly spiced stew of various meats and vegetables originating from Spain and Portugal. 2a miscellaneous collection of things. a variety act or show. Origin: mid 17th century: from Spanish olla 'stew', from Latin olla 'cooking pot'olio in other Oxford dictionaries Definition of olio in the US English dictionary