tobramycin to both ears • to-burst · · · Info · Definitions · Synonyms · Characters · · tobramycin · · Text Latin · · Script 10 · · Length 4 · · Syllables Definitions · · · (noun) an antibiotic (trade name Nebcin) that is especially effective against Gram-negative bacteria. Synonyms: Nebcin. · · Noun Definition 1 Synonyms · · · nebcin · · Synonym 1 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 y latin small letter y U+0079