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The Collaborative International Dictionary
Tropidonotus sipedon

Water adder \Wa"ter ad"der\ (Zo["o]l.)

  1. The water moccasin.

  2. The common, harmless American water snake ( Tropidonotus sipedon). See Illust. under Water Snake.

Tropidonotus sipedon

Water snake \Wa"ter snake`\ (Zo["o]l.)

  1. A common North American colubrine snake ( Tropidonotus sipedon) which lives chiefly in the water.

  2. Any species of snakes of the family Homalopsid[ae], all of which are aquatic in their habits.