Dictyocaulus

noun
Dic·​ty·​o·​cau·​lus | \ ˌdik-tē-ə-ˈkȯ-ləs How to pronounce Dictyocaulus (audio) \

Medical Definition of Dictyocaulus

: a genus of small slender lungworms of the family Metastrongylidae infesting mammals (as ruminants) and often causing severe bronchial symptoms or even pneumonia in young animals