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|Noun||1.||headache powder - a powdered form of aspirin |
acetylsalicylic acid, aspirin, Bayer, Empirin, St. Joseph - the acetylated derivative of salicylic acid; used as an analgesic anti-inflammatory drug (trade names Bayer, Empirin, and St. Joseph) usually taken in tablet form; used as an antipyretic; slows clotting of the blood by poisoning platelets
powder - any of various cosmetic or medical preparations dispensed in the form of a pulverized powder