Main Entry: oil

Pronunciation: \ˈȯi(ə)l\

Function: noun

1 : any of numerous unctuous combustible substances that are liquid or can be liquefied easily on warming, are soluble in ether but not in water, and leave a greasy stain on paper or cloth—see essential oil, fatty oil, volatile oil
2 : a substance (as a cosmetic preparation) of oily consistency <bath oil>

—oil adjective