noun, any reptile of the suborder Ophidia (or Serpentes), typically having a scaly cylindrical limbless body, fused eyelids, and a jaw modified for swallowing large prey: includes venomous forms such as cobras and rattlesnakes, large nonvenomous constrictors (boas and pythons), and small harmless types such as the grass snake. Related adjs colubrine, ophidian

From Collins

©HarperCollins 2008. Collins English Dictionary definition of snake