n.
Pronunciation: ' a-d ə r
Function: noun
Etymology: Middle English, alteration (by false division of a naddre ) of naddre, from Old English n ǣ dre; akin to Old High German n ā tara adder, Latin natrix water snake
Date: 14th century
1 : the common venomous viper ( Vipera berus ) of Europe broadly : any of various snakes of the viper family ― compare PUFF ADDER
2 : any of several No. American snakes (as the hognose snakes) that are harmless but are popularly believed to be venomous
adder