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.
Mineral oil, also called liquid petroleum, paraffin oil or white mineral oil is an inexpensive byproduct produced in the purification of petroleum and during the production of gasoline and other petrochemical products from crude oil. Mineral oil is a light, colorless, transparent, tasteless, odorless and oily liquid that will not spoil.