Oregon grape

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of various evergreen shrubs of the genus Berberis (or Mahonia), especially B. aquifolium of northwest North America, having compound leaves and bluish-black berries that resemble small grapes.

from The Century Dictionary.

• noun See Berberis.

from the GNU version of the Collaborative International Dictionary of English.

• (Bot.) An evergreen species of barberry (Berberis Aquifolium), of Oregon and California; also, its roundish, blue-black berries.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun An evergreen shrub (Mahonia aquifolium) native to the northwestern United States and southwestern Canada, having broadly serrated, glossy leaves and clusters of yellow flowers that develop into dark bluish-purple fruits. Also called tall Oregon grape.
• noun Any of various related shrubs of the Mahonia genus, including dwarf Oregon grape, Cascade Oregon grape, and creeping Oregon grape.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun small shrub with grey-green leaves and yellow flowers followed by glaucous blue berries
• noun ornamental evergreen shrub of Pacific coast of North America having dark green pinnate leaves and racemes of yellow flowers followed by blue-black berries