Adder

Pronunciation

 * , {{SAMPA|/{d@`/}}

Noun

 * 1)  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 the genus Clotho.
 * 2) 🇺🇸 Any of several small nonvenomous snakes resembling the adder, such as the milk snake.

Noun

 * 1) Someone who or something which performs arithmetic addition.
 * 2) Something which adds or increases.