lithography: a method of planographic printing from a metal or stone surface
planographic printing: the process of printing from a surface on which the printing areas are not raised but are ink-receptive (as opposed to ink repellent)
aspirin: 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