Wordnet 3.0
NOUN (1)
1. 
 an animal having teeth fused with the inner surface of the alveolar ridge without sockets; 
The Collaborative International Dictionary of English v.0.48:
Pleurodont \Pleu"ro*dont\, a. [Pleuro- + Gr. ?, ?, a tooth.]
   (Anat.)
   Having the teeth consolidated with the inner edge of the jaw,
   as in some lizards.
   [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Pleurodont \Pleu"ro*dont\, n. (Zool.)
   Any lizard having pleurodont teeth.
   [1913 Webster]
WordNet (r) 3.0 (2006):
pleurodont
    n 1: an animal having teeth fused with the inner surface of the
         alveolar ridge without sockets