DictionaryviperVenomous snake
noun

viper

VY-per/ˈvaɪpər/

A venomous snake with long, hinged fangs.

The coiled viper opens its mouth, revealing its long, curved fangs.

A coiled European adder with its mouth open in a defensive gape, clearly revealing the long, curved upper fangs rotated forward from the roof of its mouth.
Etymology

The roots describe bearing live young, pointing to reproduction rather than venom. Vipers generally retain their eggs inside the mother until hatching, so the young emerge alive.

In context

Nat Geo Animals41:53
Potently cytotoxic with additional hemotoxic components, carpet viper venom destroys tissue, organs, almost always resulting in loss of limbs or lives in hours.
Africa's Most Dangerous Snakes (Full Episode) | World's Deadliest Snakes | Nat Geo Animals

More examples

  • A viper folds its fangs back when it closes its mouth.
  • The hikers keep their distance from the viper beside the trail.
  • Vipers use venom to subdue their prey.

Forms

viper · vipers

Similar words

adder
Names certain vipers, but also some unrelated snakes.
snake
A broader term that includes venomous and nonvenomous species.