{ Hy″læ‐o‐saur′ (?), ‖Hy′læ‐o‐sau″rus (?), } n. [NL. hylaeosaurus, fr. Gr. � belonging to a forest (fr. � wood) + � a lizard.] (Paleon.) 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.
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Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.