1. A group of antibiotics derived from the penicillium fungus, used to treat bacterial infections.
Usage: Usually used in plural form; refers to multiple types or doses of penicillin-based drugs

Examples

• The doctor prescribed penicillins to treat the patient's strep throat infection.
• Different penicillins are effective against various types of bacteria.
• Some people have allergic reactions to penicillins and must use alternative antibiotics.
• Penicillins have saved millions of lives since their discovery in the 1920s.
• The hospital stocks several types of penicillins in its pharmacy.