racerunner(redirected from Racerunners)
Also found in: Thesaurus.
Any of several swift teiid lizards, especially Aspidoscelis sexlineata (syn. Cnemidophorus sexlineatus) of the United States and northern Mexico, having a brownish body with longitudinal light-colored stripes.
a whiptail lizard, Cnemidophorus sexlineatus, common in the eastern and central U.S., that runs with great speed.