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Adder is a 5 letter word which starts with the letter A and ends with the letter R for which we found 5 definitions.

n. One who, or that which, adds; esp., a machine for adding numbers.
n. A serpent.
n. A small venomous serpent of the genus Vipera. The common European adder is the Vipera (/ Pelias) berus. The puff adders of Africa are species of Clotho.
n. In America, the term is commonly applied to several harmless snakes, as the milk adder, puffing adder, etc.
n. Same as Sea Adder.

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