Wa"ter moc"ca*sin (?). Zool.
A venomous North American snake (Ancistrodon piscivorus) allied to the rattlesnake but destitute of a rattle. It lives in or about pools and ponds, and feeds largely of fishes. Called also water snake, water adder, water viper.
<-- called also cottonmouth, cottonmouth moccasin, and cottonmouth water moccasin. -->
© Webster 1913.