The American Heritage® Dictionary of the English Language, 4th Edition
n. Any of various shrubs of the genus Berberis having leaves that are often clustered, small yellow flowers, and red, orange, or blackish berries. They are grown as specimen or hedge plants.
n. A thorny shrub that bears yellow flowers and red or blue-black berries.
the GNU version of the Collaborative International Dictionary of English
n. A shrub of the genus Berberis, common along roadsides and in neglected fields. Berberis vulgaris is the species best known; its oblong red berries are made into a preserve or sauce, and have been deemed efficacious in fluxes and fevers. The bark dyes a fine yellow, esp. the bark of the root.
The Century Dictionary and Cyclopedia
n. A shrub of the genus Berberis, B. vulgaris, bearing racemes of yellow ill-smelling flowers, which produce red elongated berries of a pleasantly acid flavor, a native of Europe and extensively naturalized in New England.
n. The fruit of this shrub.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. any of numerous plants of the genus Berberis having prickly stems and yellow flowers followed by small red berries
Word Usage
"Adjacent to the reserve's mowed fields are two "old fields" which have succeeded to shrubs, such as barberry, honeysuckle, bayberry and pasture rose."