oil

oil

noun \ˈȯi(ə)l\

Definition of OIL

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