What is the meaning of Oil?

Liquid fat.

Petroleum-based liquid used as fuel or lubricant.

Petroleum.

An oil painting.

Oil paint.

To lubricate with oil.

To grease with oil for cooking.

To fuel with oil.

To say in an unctuous manner.

disgrace, reproach; act of reproaching

blemish, defect

nourish, rear, foster

train, educate

alternative form of ail (“stone, rock”)

alternative form of oir (“suit, fit, become”)

alternative form of oyle

yes

yes

alternative form of ueil

water

sap

Source: wiktionary.org