11 letters · 12 points in Scrabble
noun herbivorous ornithischian dinosaur with a row of bony plates along its back and a spiked tail probably used as a weapon
originFrom the genus name Stegosaurus. From Ancient Greek στέγος (stégos, “roof”) + σαῦρος (saûros, “lizard”).
Etymology from Wiktionary, CC BY-SA 3.0