1. A slippery or viscous liquid or liquefiable substance not miscible with water
   "The mechanic changed the oil in the car engine"
    
2. A dark oil consisting mainly of hydrocarbons
   "The discovery of crude oil reserves transformed the country's economy";
   - petroleum, crude oil, crude, rock oil, fossil oil, black gold [informal]
    
3. Any of a group of liquid edible fats that are obtained from plants
   "Vegetable oil is often used as a healthier alternative to animal fats";
   - vegetable oil
    
4. Oil paint containing pigment that is used by an artist
   "The painter squeezed a dollop of oil colour onto his palette";
   - oil color [US], oil colour [Brit, Cdn]

1. Cover with oil, as if by rubbing
   "oil the wooden surface"
    
2. Administer an oil or ointment to; often in a religious ceremony of blessing
   "The priest inuncted the sick with holy oil";
   - anoint, inunct, anele [archaic], embrocate
    
3. Lubricate with oil
   "oil the squeaky door"

Derived forms: oils, oiling, oiled

Type of: bless, cover, edible fat, fossil fuel, lipid, lipide, lipoid, oil paint

Part of: margarine, marge [Brit, informal], oleo [N. Amer], oleomargarine [N. Amer]

Encyclopedia: Oil, Gas & Energy Law Intelligence