The Collaborative International Dictionary of English v.0.48:

Lizard \Liz"ard\, n. [OE. lesarde, OF. lesarde, F. l['e]zard, L.
   lacerta, lacertus. Cf. Alligator, Lacerta.]
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   1. (Zool.) Any one of the numerous species of reptiles
      belonging to the order Lacertilia; sometimes, also
      applied to reptiles of other orders, as the Hatteria.
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   Note: Most lizards have an elongated body, with four legs,
         and a long tail; but there are some without legs, and
         some with a short, thick tail. Most have scales, but
         some are naked; most have eyelids, but some do not. The
         tongue is varied in form and structure. In some it is
         forked, in others, as the chameleons, club-shaped, and
         very extensible. See Amphisb[ae]na, Chameleon,
         Gecko, Gila monster, Horned toad, Iguana, and
         Dragon, 6.
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   2. (Naut.) A piece of rope with thimble or block spliced into
      one or both of the ends. --R. H. Dana, Ir.
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   3. A piece of timber with a forked end, used in dragging a
      heavy stone, a log, or the like, from a field.
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   Lizard snake (Zool.), the garter snake (Eut[ae]nia
      sirtalis).

   Lizard stone (Min.), a kind of serpentine from near Lizard
      Point, Cornwall, England, -- used for ornamental purposes.
      [1913 Webster] lizardfish