(dated) A nutritional supplement derived from the liver of the halibut.

A grade of oil used principally as a fuel. / Specifically, the heaviest commercial fuel that can be obtained from crude oil.

(slang) The drug opium.

Used other than figuratively or idiomatically: see banana, oil. / (dated) Nonsense. / (chemistry) The chemical substance isoamyl acetate.

(chemistry) An aromatic oil extracted from the European broad-leaved lavender, or aspic (Lavendula spica), used in varnish and in veterinary medicine.

Silk made waterproof by saturation with boiled oil.

Synonym of motor oil

plural of engine oil

A thin film of oil floating on the surface of water, especially one that has leaked or been discharged from a ship etc

An oil contained in species of Camellia, including the tea plant, used in cooking especially in southern China.