Definition of "Powder" :

noun: any of various cosmetic or medical preparations dispensed in the form of a pulverized powder

noun: a solid substance in the form of tiny loose particles; a solid that has been pulverized

noun: a mixture of potassium nitrate, charcoal, and sulfur in a 75:15:10 ratio which is used in gunnery, time fuses, and fireworks

verb: apply powder to

"She powdered her nose."

verb: make into a powder by breaking up or cause to become dust