adder — meaning in English

English meaning

• adder noun A small venomous snake found across Europe, including Britain, marked with a dark zigzag pattern down its back.
• viper noun A venomous snake, especially one of the family that includes adders and rattlesnakes.

Senses

adder is used for these senses in English:

• common European adder A venomous snake of species Vipera berus, in the family Viperidae, that can be found throughout much of Europe, and as far as East Asia
• viper A venomous snake in the family Viperidae.

adder — full definition

1. noun A small venomous snake found across Europe, including Britain, marked with a dark zigzag pattern down its back.
2. noun A person or device that performs addition.

viper — full definition

1. noun A venomous snake, especially one of the family that includes adders and rattlesnakes.
2. noun A treacherous, spiteful, or dangerous person.