whip snake

noun

Definition of whip snake

: any of various slender snakes: such as

a : a long bright-green harmless tree snake (Philodryas viridissimus) of South America

— called also emerald whip snake

b : coachwhip snake

c : a snake of a boigid genus (Dryophis) of Asia having a long leaflike head

d : any of several small Australian snakes (genera Demansia and Denisonia) that are venomous but not deadly