Definitions

1. noun

a white crystalline substance used as an analgesic, antipyretic, and anti-inflammatory

“She took an aspirin to relieve her headache.”

2. noun

a type of acetylsalicylic acid, especially in its sodium or calcium salt form

“The pharmacist filled the prescription for aspirin.”

3. verb

to take an aspirin, especially for pain relief or to reduce inflammation

“He aspirin for his arthritis every day.”