water adder

plural water adders · alternative water-adder · alternative wateradder

1. A water mocassin (Agkistrodon piscivorus), a venomous aquatic snake of North America.

   Synonyms: cottonmouth, cottonmouth mocassin

2. Any of species Natrix natrix of non-venomous European snakes.

   Synonyms: ringed snake, water snake, grass snake

3. Any aquatic snake, such as:
   1. A northern water snake (Nerodia sipedon), a non-venomous American snake.

      Synonyms: water snake, watersnake

   2. A crab-eating water snake or white-bellied mangrove snake (Fordonia leucobalia), a venomous snake of south Asia.

      Synonyms: water snake, watersnake

4. Used other than figuratively or idiomatically: see water, adder.