Viper

vī′pėr, n. a genus of venomous snakes, representative of family Viperidæ —the Common Viper or adder being the only poisonous snake indigenous to Britain: loosely, any venomous serpent except a rattlesnake, any cobriform serpent: any base, malicious person.— adjs. Vī′perine , related to or resembling the viper; Vī′perish , like a viper; Vī′perous , having the qualities of a viper: venomous: malignant.— adv. Vī′perously .— Viper's buglo , the blue weed or blue thistle; Viper's gra , a European perennial of the aster family. [Fr.,—L. viper a (contr. of vivipara )— vivus , living, parĕre , to bring forth.]