(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

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.

(idiomatic) Two things which are incapable of mixing or coexisting harmoniously with each other.