柯林斯词典penicillin /ˌpɛnɪˈsɪlɪn/ 1. N-UNCOUNT Penicillin is a drug that kills bacteria and is used to treat infections. 青黴素 返回 penicillin剑桥词典a type of antibiotic (= a medicine that kills bacteria ) 磐尼西林,青黴素 返回 penicillin