(Sanskrit) From भुजङ्ग, "serpent." An alternate name for Kundalini. The "serpent power," a descriptive term for the energy of the Divine Mother that awakens in the physical and internal bodies of those who earn it by means of purity, chastity, and service to others (i.e. Kundalini Yoga, tantra).
"Kundalini is also called Bhujangini, serpent power." - Swami Sivananda, Kundalini Yoga