VI'PER, noun [Latin vipera.] 1. A serpent, a species of coluber, whose bite is remarkably venomous. A viper came out of the heat, and fastened on his hand. Acts 28:3. 2. A person or thing mischievous or malignant.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI