Real Dictionary

triceratops in American English
any of a genus (Triceratops) of massive, four-legged ceratopsian dinosaurs of the Cretaceous having a large, bony crest over the neck, a long horn above each eye, and a short horn on the nose
noun: any of various dinosaurs of the genus Triceratops, of the late Cretaceous Period, having a bony crest on the neck, a long horn over each eye, and a shorter horn on the nose

triceratops in British English
noun: any rhinoceros-like herbivorous dinosaur of the ornithischian genus Triceratops, of Cretaceous times, having a heavily armoured neck and three horns on the skull