Noun
a greasy substance used as makeup by actors
Source: WordNetAs far as performance, the roar of the crowd, the smell of the greasepaint no I don't feel that. Peter Garrett
A scene in Duck Soup finds Groucho, Harpo, and Chico all appearing in the famous greasepaint eyebrows, mustache, and round glasses while wearing nightcaps. Source: Internet
Groucho began to wear his trademark greasepaint mustache and to use a stooped walk. Source: Internet
Marx was asked to apply the greasepaint mustache once more for You Bet Your Life when it came to television, but he refused, opting instead to grow a real one, which he wore for the rest of his life. Source: Internet