ceroPronunciation: /ˈsɪərəʊ/Definition of cero noun (plural same or ceros) a large fish of the mackerel family, which is an important food fish in the tropical western Atlantic. Scomberomorus regalis, family Scombridae Origin: late 19th century: from Spanish sierra 'saw or sawfish'cero in other Oxford dictionaries Definition of cero in the US English dictionary
