VRITRA

Vritra (Sanskrit: वृत्र, vṛtrá, lit. "enveloper") is a Vedic serpent, dragon or demon in Hinduism, the personification of drought, and adversary of Indra. Vritra is identified as an Asura and Danava. Vritra was also known in the Vedas as Ahi (Sanskrit: अहि ahi, lit. "snake"). He appears as a human-like serpent blocking the course of the rivers and is heroically slain by Indra.