adder

One who, or that which, adds; esp., a machine for adding numbers. 1. A serpent. [Obs.] "The eddre seide to the woman." Wyclif. Gen. iii. 4. ) 2. (Zoöl.) (a) A small venomous serpent of the genus Vipera. The common European adder is the Vipera (or Pelias) berus. The puff adders of Africa are species of Clotho. (b) In America, the term is commonly applied to several harmless snakes, as the milk adder, puffing adder, etc. (c) Same as Sea Adder. Note: In the sculptures the appellation is given to several venomous serpents, -- sometimes to the horned viper (Cerastles).

Source: Webster's Revised Unabridged Dictionary (1913), United States public domain. See methodology for full licensing detail. Word validity for game play may differ from any official game dictionary.