Baghdad boil
noun
Bagh·dad boil
| \ ˈbag-ˌdad-
\
\
Medical Definition of Baghdad boil
: oriental sore
Iran makes basic childhood vaccines and is struggling to make one against leishmaniasis, a sandfly-borne disease that caused the painful "Baghdad boil" that afflicted the first American troops in Iraq and, if left untreated, eventually can kill.— Donald J. McNeil Jr., The New York Times, 20 Dec. 2011