Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun penicillin

1 sense of penicillin

Sense 1
penicillin -- (any of various antibiotics obtained from Penicillium molds (or produced synthetically) and used in the treatment of various infections and diseases)
       => antibiotic, antibiotic drug -- (a chemical substance derivable from a mold or bacterium that can kill microorganisms and cure bacterial infections; "when antibiotics were first discovered they were called wonder drugs")