- an evergreen shrub, Purshia tridentata, of western North America, having bitter three-toothed leaves and yellow flowers, valuable for forage.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for bitterbrush
Troy tracked around a trough of bitterbrush that bent and fought against the deep snow.The Thirst Quenchers
Purshia tridentata (bitterbrush) is the understory codominant.