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