1) Genus coluber 2) Racers 3) Reptile genus 
Coluber is a genus of thin bodied, fast moving, colubrid snakes commonly known as racers. They are widespread around the world and vary greatly in habitat and behaviour. In the past, Coluber was a catch-all genus which included almost all snake species known at the time. Even the cobra was once classified as Coluber naja. ...
• (n.) A genus of harmless serpents.
Col'u·ber noun [ Latin , a serpent.] (Zoology) A genus of harmless serpents. » Linnæus placed in this genus all serpents, whether venomous or not, whose scales beneath the tail are arranged in pairs; but by modern writers it is greatly restricted.
[n] - racers
Coluber Genus of nonvenomous snakes. There are more than 50 species, occurring in Europe, Asia, and America.
genus Coluber noun racers