1. (n.)powder matter reduced to fine, loose particles by crushing, grinding, disintegration, etc.
2. powder a preparation in this form, as gunpowder or face powder.
3. powder loose, usu. fresh snow that is not granular, wet, or packed.
4. (v.t.)powder to reduce to powder; pulverize.
5. powder to sprinkle or cover with or as if with powder: A light snowfall powdered the ground.
6. powder to apply powder to (the face, skin, etc.) as a cosmetic.
7. (v.i.)powder to become pulverized.
8. powder to use powder as a cosmetic.
9. (n.)powder Obs. a sudden, frantic, or impulsive rush.
Definition of 'powder'
Princeton's WordNet
1. (noun)powder, pulverization, pulverisation a solid substance in the form of tiny loose particles; a solid that has been pulverized
2. (noun)gunpowder, powder a mixture of potassium nitrate, charcoal, and sulfur in a 75:15:10 ratio which is used in gunnery, time fuses, and fireworks
3. (verb)powder any of various cosmetic or medical preparations dispensed in the form of a pulverized powder
4. (verb)powderize, powderise, powder, pulverize, pulverise make into a powder by breaking up or cause to become dust "pulverize the grains"
5. (verb)powder apply powder to "She powdered her nose"; "The King wears a powdered wig"