analgesic, anodyne, pain pill, painkiller - a medicine used to relieve pain

aspirin powder, headache powder - a powdered form of aspirin

buffered aspirin, Bufferin - aspirin coated with a substance capable of neutralizing acid (trade name Bufferin)

enteric-coated aspirin - aspirin that is treated to pass through the stomach unaltered and to dissolve in the intestines

brand, brand name, marque, trade name - a name given to a product or service

salicylate - a salt of salicylic acid (included in several commonly used drugs)

2-hydroxybenzoic acid, salicylic acid - a white crystalline substance with a bitter aftertaste; used as a fungicide or in making aspirin or dyes or perfumes