IPA: /ˈhaɪˌbʌʃ/
KK: /haɪbʌʃ/
Describing a type of bush that is tall or grows to a significant height.
The highbush blueberries are easier to pick than the lowbush varieties.
Highbush is formed from "high" (from Old English "hēah", meaning tall or elevated) and "bush" (from Old English "busc", meaning a shrub or thicket). The term "highbush" refers to a type of bush that grows tall or elevated, often used in the context of certain berry plants like highbush blueberries.
Think of something that is 'tall' ('high') and a 'shrub' ('bush') — that's why highbush refers to a tall shrub.