the GNU version of the Collaborative International Dictionary of English
adj. Like a lizard; of or pertaining to the Lacertilia.
The Century Dictionary and Cyclopedia
Lizard-like; lacertilian; of or pertaining to the Lacertæ or Lacertilia; saurian, in a narrow sense.
n. A lacertilian; a lizard.
Word Usage
"Elgin in Scotland, containing the bones of lacertian, crocodilian, and rhynchosaurian reptiles, may not be referable to the "Old Red" or Devonian group."