Penicillin
Definition: penicillin
penicillin: An antibiotic, originally produced from a fungus, that controls bacterial and fungal infections (NOTE: Penicillin and the related family of drugs have names ending in -cillin: amoxycillin). COMMENT: Penicillin is effective against many microbial diseases, such as mastitis in cattle. Using antibiotics like penicillin helps in treating infections and maintaining livestock health.