1. a fungicidal antibiotic produced by molds of the genus Penicillium. 
   由青霉素类软膏制成的真菌抗生素。
2. Any of various characteristically bluish-green fungi of the genus Penicillium that grow as molds on decaying fruits and ripening cheese and are used in the production of penicillin and in making cheese. 
   青霉菌任何一种长于腐烂的水果和成熟的奶酪上的青霉菌属蓝绿色真菌，用于制造青霉素和奶酪
3. any of various antibiotics obtained from penicillium molds (or produced synthetically) and used in the treatment of various infections and diseases. 
   从氢霉菌提取的（或合成的）用来治疗各种各样的传染病和细菌疾病的抗生素。
4. Any of a group of broad-spectrum antibiotic drugs obtained from penicillium molds or produced synthetically, most active against gram-positive bacteria and used in the treatment of various infections and diseases. 
   青霉素，盘尼西林一种从青霉菌或人工合成青霉菌中提炼的广谱抗生素，能最有效地防治革兰氏阳性细菌且广泛运用于各种传染病和疾病的治疗中
5. an arthropod genus formerly called genus Ctenocephalus. 
   蚤的一个属，包括狗蚤和猫蚤。

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