Viper definition, any of several venomous Old World snakes of the genus Vipera, especially V. berus, a small snake common in northern Eurasia. viper n noun: Refers to person, place, thing, quality, etc. They eat small animals and hunt by striking, then trailing their prey. Exemplos: la mesa, una tabla. Viper definition is - a common Eurasian venomous snake (Vipera berus) that attains a length of about two feet (0.6 meter), varies in color from red, brown, or gray with dark markings to black, and is usually not fatal to humans; broadly : any of a family (Viperidae) of venomous snakes that includes Old World snakes (subfamily Viperinae) and the pit vipers. Always secure . Viper Plagiarism Checker. Most are terrestrial, and a few are arboreal. Our mission is to protect your privacy so that you never have to think twice about what you can or can't share when you're using Viber. n. 1. Define viper. (poisonous snake) víbora nf nombre femenino: Sustantivo de género exclusivamente femenino, que lleva los artículos la o una en singular, y las o unas en plural. viper synonyms, viper pronunciation, viper translation, English dictionary definition of viper. See more. Welcome to Viper - a leading alternative plagiarism checker which, using its range of powerful features, will help you check for plagiarism and duplicate content in your work. There are about 200 species of viper in the world. A bite from a viper is sometimes fatal. From individual students to lecturers and institutions, Viper is the plagiarism checker of choice for thousands of people every month.