- an evergreen shrub, Mahonia aquifolium, of the barberry family, of the western coast of the U.S., having small blue berries and yellow flowers that are the state flower of Oregon.
- the berry itself.
- an evergreen berberidaceous shrub, Mahonia aquifolium, of NW North America, having yellow fragrant flowers and small blue edible berries
- the berry of this shrub
