The term 'member of the genus vipera' can be summarized as an ADDER, which is a type of venomous snake. ADDER is a five-letter word that is used to refer to any species of viper, a family of venomous snakes found in Europe, Asia, Africa, and North America. These snakes are characterized by their triangular heads, long bodies, and short tails. They are known for their potent venom, which can cause severe pain and even death in humans.