noun. an antibiotic (trade name Garamycin) that is derived from an actinomycete; used in treating infections of the urinary tract.
1. Noun, singular or mass Antibiotics such as penicillin and gentamicin can be to blame. 2. Adjective If your child experiences any of these symptoms after using gentamicin eye drops, contact your pediatrician or seek medical attention immediately. 3. Verb, base form As with all medications, certain babies may be allergic to gentamicin eye drops.