staggerbush

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

• noun A deciduous shrub (Lyonia mariana) in the heath family, native to the eastern United States, having poisonous foliage and white or pink flowers clustered in racemes.

from The Century Dictionary.

• noun The shrub Andromeda (Pieris) Mariana of the middle and southern United States, whose leaves have been supposed to give the staggers to animals.

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

• noun (Bot.) An American shrub (Andromeda Mariana) having clusters of nodding white flowers. It grows in low, sandy places, and is said to poison lambs and calves.

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

• noun botany Any of the genus Lyonia of ericaceous flowering plants.

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

• noun deciduous shrub of coastal plain of the eastern United States having nodding pinkish-white flowers; poisonous to stock
• noun deciduous shrub of coastal plain of the eastern United States having nodding pinkish-white flowers; poisonous to stock