1. A species of herbivorous dinosaur with distinctive rows of bony plates along its back and spikes on its tail used for defence
   "The stegosaur's distinctive plates may have been used for temperature regulation";
   - stegosaurus, Stegosaurus stenops

Derived forms: stegosaurs

Type of: armored dinosaur [US]

Part of: genus Stegosaurus

Encyclopedia: Stegosaur