<p><strong>Noun</strong></p><ul><li>a plant-eating dinosaur of the genus Stegosaurus</li><li>from the Jurassic and Cretaceous periods</li><li>having a heavy, bony armor</li><li>a row of bony plates along its back</li><li>growing to a length of 20 to 40 feet (6–12 meters)</li></ul>