adder: Meaning and Definition of
ad•der
Pronunciation: (ad'ur), [key]
— n.
- the common European viper, Vipera berus.
- any of various other venomous or harmless snakes resembling the viper.
add•er
Pronunciation: (ad'ur), [key]
— n.
- a person or thing that adds.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.