#1 oil n. a slippery or viscous liquid or liquefiable substance not miscible with water. wn
#2 oil n. [oil color, oil colour] oil paint containing pigment that is used by an artist. wn
#3 oil v. cover with oil, as if by rubbing; "oil the wooden surface". wn
#4 oil v. [anoint, inunct, anele, embrocate] administer an oil or ointment to ; often in a religious ceremony of blessing. wn
#5 oil n. [petroleum, crude oil, crude, rock oil, fossil oil] a dark oil consisting mainly of hydrocarbons. wn
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