water moccasin

Other forms: water moccasins

Definitions of water moccasin

1. noun

   venomous semiaquatic snake of swamps in southern United States
   synonyms: Agkistrodon piscivorus, cottonmouth, cottonmouth moccasin

   type of:

   pit viper

   New World vipers with hollow fangs and a heat-sensitive pit on each side of the head
2. noun

   any of numerous North American water snakes inhabiting fresh waters
   type of:

   water snake

   any of various mostly harmless snakes that live in or near water