1.  oregon grape(n = noun.plant) mahonia nervosa - small shrub with grey-green leaves and yellow flowers followed by glaucous blue berries;
is a kind of bush, shrub

2.  oregon grape(n = noun.plant) holly-leaves barberry, hollygrape, mahonia aquifolium, mountain grape, oregon holly grape - ornamental evergreen shrub of Pacific coast of North America having dark green pinnate leaves and racemes of yellow flowers followed by blue-black berries;
is a kind of bush, shrub

   An evergreen species of barberry (Berberis Aquifolium), of Oregon and California; also, its roundish, blue-black berries. [1913 Webster]

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