Silk made waterproof by saturation with boiled oil.

plural of oiled silk

Something that operates capably through the effective coordination of many parts.

plural of well-oiled machine

Unrefined oil; as it is found underground, consisting mainly of hydrocarbons.

An essential oil used in perfumery.

(idiomatic) A fraudulent, ineffective potion or nostrum; panacea. / A traditional Chinese medicine used to treat joint pain.

(slang) To dupe or con.

An industrial process plant where crude oil is processed and refined into useful petroleum products

An area under which are reserves of petroleum, especially one with productive oil wells.