The Collaborative International Dictionary of English v.0.48:

Stellion \Stel"lion\, n. [L. stellio a newt having starlike
   spots on its back, fr. stella a star.] (Zool.)
   A lizard (Stellio vulgaris), common about the Eastern
   Mediterranean among ruins. In color it is olive-green, shaded
   with black, with small stellate spots. Called also hardim,
   and star lizard.
   [1913 Webster]