Definition of ESTRUS. : a regularly recurrent state of sexual excitability during which the female of most mammals will accept the male and is capable of conceiving: heat; also: a single occurrence of this state. See estrus defined for kids.
1. (medicine) any of various liquids sold as medicine (as by a travelling medicine show) but medically worthless. 2. communication (written or spoken) intended to deceive. Familiarity information: SNAKE OIL used as a noun is rare. Dictionary entry details.
The snake animal meaning is powerfully connected to life force and primal energy. In many cultures, it is revered as a powerful totem representing the source of life. When the snake spirit animal appears in your life, it likely means that healing opportunities, change, important transitions, and increased energy are manifesting.