Learner's definition of MAKEUP
1 [singular] : the way in which something is put together or arranged — often + of
the makeup of the Earth's atmosphere
the ethnic makeup of the neighborhood
the makeup [=layout] of a printed page
2 [singular] : the physical, mental, and moral character of a person
3 a : substances (such as lipstick or powder) used to make someone's face look more attractive
b : materials (such as wigs or cosmetics) that are used to change the appearance of an actor
She put on some makeup before the party.
She applied her makeup lightly/heavily.
wearing heavy/thick makeup
She's too young to wear makeup.
a makeup artist [=a person whose job is to put makeup on actors or models]
4 [count], US : a special test for a student who has missed or failed a previous test — often used before another noun
— see also make up at 1make