erythromycin
    n 1: an antibiotic (trade name Erythrocin or E-Mycin or Ethril
         or Ilosone or Pediamycin) obtained from the actinomycete
         Streptomyces erythreus; effective against many Gram-
         positive bacteria and some Gram-negative [syn:
         erythromycin, Erythrocin, E-Mycin, Ethril,
         Ilosone, Pediamycin]