adder
1. [ noun ] a machine or person that adds
Related terms: calculator calculator total
2. [ noun ] a person who adds numbers
Related terms: calculator
3. [ noun ] (zoology) small terrestrial viper common in northern Eurasia
Synonyms: Vipera_berus common_viper
Related terms: viper Vipera
Similar spelling:   Ader
  adhere
  Adar
  Adria
  adore
  Adair
  Addario
  Addair