What is Powder ?
Powder is (noun) a substance like flour with very small dry grains to grind something to powder The drug is available in the form of a white powder. (verb) to put face powder on something She was powdering her cheeks. to powder your nose (of a woman) to go to the toilet Can you wait a minute? -I’m just going to powder my nose.
source: Easier English, Student Dictionary Upper Intermediate Level