Penicillin
WordNet
noun
(1) Any of various antibiotics obtained from Penicillium molds (or produced synthetically) and used in the treatment of various infections and diseases
WiktionaryText
Noun
- Any of a group of broad-spectrum antibiotics obtained from Penicillium molds or synthesized; they have a beta-lactam structure; most are active against gram-positive bacteria and used in the treatment of various infections and diseases.