» Octagonal is also an adjective of: Octagon Octagonal (foaled 1992 in New Zealand) is a retired champion Thoroughbred racehorse, also known as 'The Big O' or 'Occy'. He was by the champion sire Zabeel, out of the champion broodmare Eight Carat, who also produced Group One winners Mouawad, Kaapstad, Diamond Lover and (Our) Marquise. Trained by John Hawkes, Octagonal made his debut late in 1994, and was crowned the Australian Champion Two Year Old on the strength of his autumn campaign, which co… (More on Octagonal)