adder

Noun
  1. is a type of: calculator, computer, estimator, figurer, reckoner - an expert at calculation (or at operating calculating machines)
  2. is a type of: calculating machine, calculator - a small machine that is used for mathematical calculations; can be mechanical or electronic
  3. is a type of: viper - venomous Old World snakes characterized by hollow venom-conducting fangs in the upper jaw
    belongs to: genus vipera, vipera - type genus of the Viperidae
    same as: common viper, vipera berus

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