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.
crude oil is a liquid found naturally in rock containing mostly complex hydrocarbons with some additional organic material it is the major fuel used on the planet and is used in the production of many synthetic materials like plastics as wellrude oil is a mixture of complex hydrocarbons that is extracted from beneath the earth s surface an oil well crude oil can be refined into other petroleum products