a·mi·no·gly·co·side 
(ə-mē′nō-glīkə-sīd′, ăm′ə-)
(ə-mē′nō-glīkə-sīd′, ăm′ə-)n.
Any of a group of broad-spectrum antibiotics, such as streptomycin, derived from species of Streptomyces or Micromonospora bacteria and used to treat infections caused by gram-negative bacteria.