penicillin
/ˌpɛnɪˈsɪlɪn/
noun
- A type of antibiotic medicine used to treat bacterial infections.
- The doctor prescribed penicillin for my strep throat.
- Some people are allergic to penicillin and must take a different medicine.
- Penicillin was one of the first antibiotics discovered and has saved millions of lives.
Synonyms