D defs.my
Entry 1 sense Webster, 1913

Hylæosaur

· Hy·læ·o·saur · IPA
01 n. A large Wealden dinosaur from the Tilgate Forest, England. It was about twenty feet long, protected by bony plates in the skin, and armed w…
  1. 1.
    A large Wealden dinosaur from the Tilgate Forest, England. It was about twenty feet long, protected by bony plates in the skin, and armed with spines.(Paleon.)