(countable, uncountable) An item's composition.

(countable, uncountable) Cosmetics; colorants and other substances applied to the skin to alter its appearance.

(manufacturing) Replacement; material used to make up for the amount that has been used up.

(education) A test given to students allowing them to repeat failed material.

(finance) In a NIMCRUT, an amount distributed from the trust's income in subsequent years to make up for a present shortfall.

(transitive, intransitive) To put makeup on (someone or something).