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oil [ˈojəl]

1 oil noun
  • a thick, black liquid that comes from the ground and that is used in making various products (such as gasoline) —often used before another noun
  • a type of oil that is used as a fuel to produce heat or light
  • a type of oil that makes the different parts in an engine, machine, etc., run smoothly

2 oil verb
  • to put oil in or on (something)