| OILBIRDS | • oilbirds n. Plural of oilbird. • OILBIRD n. a nocturnal bird of South America and Trinidad, aka guacharo. |
| OILCAMPS | • OILCAMP n. a living area for workers at an oil well. |
| OILCLOTH | • oilcloth n. A fabric or cloth treated on one side with a waterproof covering, especially one made from linseed oil… • OILCLOTH n. a fabric, usually of cotton, waterproofed with an oil or resin and used for clothing etc. |
| OILERIES | • oileries n. Plural of oilery. • OILERY n. an oil business. |
| OILFIELD | • oilfield n. Alternative spelling of oil field. • oil␣field n. An area under which are reserves of petroleum, especially one with productive oil wells. • OILFIELD n. an area of mineral oil production. |
| OILFIRED | • oil-fired adj. Of a boiler or heating system: burning oil as a fuel to provide heat. • OILFIRED adj. using oil as fuel. |
| OILGASES | • OILGAS n. a gaseous mixture of hydrocarbons used as a fuel. |
| OILHOLES | • OILHOLE n. a hole through which oil is injected. |
| OILINESS | • oiliness n. The quality of being oily. • OILINESS n. the state of being oily. |
| OILPAPER | • oilpaper n. A translucent, waterproof paper made by soaking in oil. • OILPAPER n. paper which has been oiled, e.g. to make it waterproof. |
| OILPROOF | • oilproof adj. Resistant to oil. • oilproof v. (Transitive) To make resistant to oil. • OILPROOF adj. impervious to oil. |
| OILSEEDS | • oilseeds n. Plural of oilseed. • OILSEED n. a kind of rape, the seeds of which contain oil. |
| OILSKINS | • oilskins n. A waterproof garment, made from oilskin, used especially at sea. • OILSKIN n. a waterproof fabric. |
| OILSTONE | • oilstone n. A type of stone used for sharpening objects such as knives and razorblades. • OILSTONE n. a stone for sharpening tools. |
| OILTIGHT | • oiltight adj. So tightly made that oil cannot enter or escape. • OILTIGHT adj. having the ability to exclude oil. |
| OINOLOGY | • oinology n. Alternative form of oenology. • OINOLOGY n. the study of wines, also OENOLOGY, ENOLOGY. |
| OINOMELS | • OINOMEL n. (Greek) a beverage of ancient Greece consisting of wine and honey, also OENOMEL. |
| OINTMENT | • ointment n. (Medicine) A viscous preparation of oils and/or fats, usually containing medication, used as a treatment… • ointment n. A substance used to anoint, as in religious rituals. • OINTMENT n. a viscous preparation applied to the skin as a medicine or cosmetic. |
| OITICICA | • oiticica n. The tree Licania rigida, endemic to Brazil and Puerto Rico. • OITICICA n. (Tupi) any of several tropical South American trees, whose crushed seeds yield an oil used in paints and varnishes. |