aspirin
noun
as·pi·rin ˈa-sp(ə-)rən 
plural aspirin or aspirins
1
: a white crystalline derivative C9H8O4 of salicylic acid used for relief of pain and fever
2
: a tablet of aspirin
Example Sentences
Aspirin is effective in controlling headaches.
Recent Examples on the Web Taking aspirin in the evening thus ensures that new platelets will be effectively deactivated before the dangerous window for stroke the following morning. 
Russell Foster, WSJ, 12 Aug. 2022 Do not allow the victim to take aspirin or use any medication. Miles Blumhardt, USA TODAY, 17 July 2022 For adults ages 60 and up with no cardiovascular disease or high risk of developing it, the U.S. Preventive Services Task Force determined there was no benefit to starting aspirin if not already on it. Scott Lafee, San Diego Union-Tribune, 31 May 2022 During the last 20 years, drug development has moved from making small molecules and chemicals, such as aspirin, that can have an impact on biology to biologicals like proteins, antibodies, and most recently RNA vaccines. John Cumbers, Forbes, 25 Jan. 2022 While Mel grabs aspirin and nitroglycerine from the first aid kit, Jack grabs the wheel and makes a triumphant water landing. Sara Netzley, EW.com, 20 July 2022 Common painkillers such as aspirin and ibuprofen may have serious side effects, including gastrointestinal bleeding, and acetaminophen has been associated with acute liver failure. Mariana Lenharo, Scientific American, 20 June 2022 The aspirin and ibuprofen recall announcement is available at this link. Chris Smith, BGR, 17 June 2022 Time-Cap Labs recalled nearly 209,430 units of Kroger brand aspirin and ibuprofen. Haley Yamada, ABC News, 16 June 2022 See More
Russell Foster, WSJ, 12 Aug. 2022 Do not allow the victim to take aspirin or use any medication. Miles Blumhardt, USA TODAY, 17 July 2022 For adults ages 60 and up with no cardiovascular disease or high risk of developing it, the U.S. Preventive Services Task Force determined there was no benefit to starting aspirin if not already on it. Scott Lafee, San Diego Union-Tribune, 31 May 2022 During the last 20 years, drug development has moved from making small molecules and chemicals, such as aspirin, that can have an impact on biology to biologicals like proteins, antibodies, and most recently RNA vaccines. John Cumbers, Forbes, 25 Jan. 2022 While Mel grabs aspirin and nitroglycerine from the first aid kit, Jack grabs the wheel and makes a triumphant water landing. Sara Netzley, EW.com, 20 July 2022 Common painkillers such as aspirin and ibuprofen may have serious side effects, including gastrointestinal bleeding, and acetaminophen has been associated with acute liver failure. Mariana Lenharo, Scientific American, 20 June 2022 The aspirin and ibuprofen recall announcement is available at this link. Chris Smith, BGR, 17 June 2022 Time-Cap Labs recalled nearly 209,430 units of Kroger brand aspirin and ibuprofen. Haley Yamada, ABC News, 16 June 2022 See More Word History
Etymology
International Scientific Vocabulary, from acetyl + spiraeic acid (former name of salicylic acid), from New Latin Spiraea, genus of shrubs — more at spirea
First Known Use
1899, in the meaning defined at sense 1
Kids Definition
aspirin
noun
as·pi·rin ˈa-sprən
ˈa-spə-rən
: a white drug used to relieve pain and fever
Medical Definition
aspirin
noun
as·pi·rin ˈas-p(ə-)rən
plural aspirin or aspirins
1
: a white crystalline derivative C9H8O4 of salicylic acid used for relief of pain and fever
2
: a tablet of aspirin