oil

oil is on the Basic English 850 List.

office - oil - old

Noun

(countable & uncountable) Oil is a liquid that is burned to create heat or used in machines to make them run well.
- Synonym: petroleum
Gas and oil are essential to running a car.
(countable & uncountable) Oil is a liquid made of fat that is used for cooking.
- Synonym: grease
Cook the potatoes in oil.
(countable) An oil is a painting made of oil paint.

Plain form
oil

Third-person singular
oils

Past tense
oiled

Past participle
oiled

Present participle
oiling

(transitive) If you oil something, you put clear oil on a machine to make it run well.
- Synonyms: grease and lubricate
She oiled the parts of the gun.