gramicidin
/ˌɡræmɪˈsaɪdɪn/
noun
- An antibiotic obtained from bacteria, used to treat infections, especially in topical creams and ointments.
- Some people are allergic to gramicidin in over-the-counter ointments.
- The doctor prescribed a cream containing gramicidin for the skin infection.
- Gramicidin is effective against many types of bacteria.