Definition of shadbush in US English:

shadbush

(also shadblow)

noun

  • another term for juneberry
    • ‘In trees such as apple, cherry, shadbush, and elderberry, with flowers and leaves packed in the same bud, the flowers generally bloom in one quick burst; the leaves follow almost immediately.’
    • ‘These hardy shrubs or small trees - also called shadbush, shadblow, or saskatoon - are seen as understory in sparse woods or at woodland edges.’
    • ‘Other names for some of them include sarvisberry, shadbush or shadbloom (because blooming when the shad are running in eastern rivers), juneberry, and saskatoon.’

Origin

Early 19th century: so named because it flowers at the same time as shad are found in the rivers.

Pronunciation

shadbush

/ˈSHadˌbo͝oSH/