aspergillin
noun
as·per·gil·lin
| \ ˌas-pər-ˈjil-ən
\
\
Medical Definition of aspergillin
1
: an amorphous black pigment found in the spores of various fungi of the genus Aspergillus
2
: an antibacterial substance isolated from two molds of the genus Aspergillus (A. flavus and A. fumigatus) and reported to possess activity against both gram-positive and gram-negative bacteria