Oil is nonpolar hydrocarbons. They don't mix in water or polar substances. However, they mix in other nonpolar substances like oils and fats and ethyl chloride.

Oil can refer to vegetable cooking oil. Examples are corn oil and coconut oil.

Oil can refer to petroleum, a type of black oil which can be fractionally distilled into tar, asphalt, gasoline, propane, butane, and more. Also the United States gets their oil from other countries by buying it, seizing it, or going to war for it.

Oil is also slang for synthol and the idiots who inject synthol and it doesn't increase strength, it only makes you have fake looking muscles. They then lift small to medium weights and still can't handle it or they lift fake weights. These people are called oilers. They don't do real weight lifting.
Chemist: This oil and water don't mix. Oil is nonpolar while water is polar. This oil mixes in ethyl chloride. They're both nonpolar.

Chef: I am going to use corn oil to cook my food.

United States: Iraq has oil? Time to seize the oil!

Oilers: Time to inject synthol! This is good oil.

People: Ha ha! Those muscles look fake!
by HawaiianPunch1 January 19, 2022
Slang term for promethazine w/ codeine cough syrup in Houston, Texas.

Syn) Drank, Lean Barr
Hook me up with some of that oil man, i gonna go get leaned on that syrup
by Andy Dandy April 1, 2005
A very good looking man. Mostly used within male conversation to point out a good looking man, in a manly fashion (as if to point out competition). Often has a very good sense of fashion and more often than not is jacked/ripped. When describing an oil, one can be referred to as 'oily'.
I was crucifying my guns in the gym the other day, when this colossal oil walked in, just pulling birds with his stare.

Oi chief, oil at 12 o'clock. We may have trouble slamming these birds.
by The Shifty Trader April 30, 2010
A liquid that made up 70% of the United States body and lust.
Oil fuels the US.
by secreperson July 23, 2021
A brown substance that is quickly being depleted.

It can be pronounced as "oy-ull" or "oll" depending on the region.
by Sir Demonosapien June 4, 2009
A Naturally formed liquid due(and thanks) to the decay of deas plants and animals that have long since passed away. It has been rumored that there might be oil somewhere over in northern Russia, over by the Siberian Pensulia.
Female reporter: What about the oil?


Black Bush: Oil? Bitch, you cookin'?
by The BIZ March 21, 2005
A myth, thought to have been discovered once but was then consumed a few mins later by America and starving Ethiopians who thought it was chocolate pudding.
Mmmmm, this pudding is good, don't you think Shaska?
by Connor August 5, 2004