Illustration of Dutchman's-breeches
Dutchman's-breeches
noun
Dutch·man's-breech·es ˌdəch-mənz-ˈbri-chəz 
plural in form but singular or plural in construction
: a spring-flowering herb (Dicentra cucullaria) of the fumitory family occurring in the eastern U.S. and having finely divided leaves and cream-white double-spurred flowers
Word History
First Known Use
1837, in the meaning defined above
Medical Definition
Dutchman's-breeches
noun, plural in form but singular or plural in construction
Dutch·man's-breech·es ˌdəch-mənz-ˈbrich-əz
: a delicate spring-flowering herb (Dicentra cucullaria of the family Fumariaceae) that occurs in the eastern United States and has tubers that are a source of corydalis