n.
1.severe respiratory disease of birds that takes the form of an acute rapidly fatal pneumonia in young chickens and turkeys
2.an opportunistic infection by a fungus of the genus Aspergillus
3.disease especially in agricultural workers caused by inhalation of Aspergillus spores causing lumps in skin and ears and respiratory organs
Idiom of the Day
drop off (someone or something) or drop (someone or something) off
to take someone or something to a certain location
I dropped off my friend at the airport.