| an evergreen shrub, Purshia tridentata, of western North America, having bitter three-toothed leaves and yellow flowers, valuable for forage. |
bit·ter·brush  (bĭt'ər-brŭsh') n. An evergreen shrub of the genus Purshia, especially P. tridentata of western North America, having bitter-tasting leaves with fuzzy undersides that are nutritious for deer, elk, and antelope. |
ərˌbrʌʃ