bour·tree /ˈbʊ(ə)r(ˌ)trɪ, ˈbɔ(ə)r-/ 名詞
bourtree
n : common black-fruited shrub or small tree of Europe and Asia;
fruit used for wines and jellies [syn: black elder, common
elder, elderberry, European elder, Sambucus nigra]