I don’t know where you got that idea, but it’s wrong; it means “fearsome lizard”. Incidentally, ConservPride is commiting the logical fallacy known as argumentum ad etymologiam.
argumentum ad etymologiam
الواصلة
ar·gu·men·tum ad etymologiam
علم أصول الكلمات
() Latin argūmentum (“argument, evidence, proof”) + ad (“to, toward”) + etymologiam, accusative form of etymologia (“etymology”)