sheep laurel

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

• noun An eastern North American evergreen shrub (Kalmia angustifolia) in the heath family, having rose-pink or crimson saucer-shaped flowers and poisonous leaves.

from The Century Dictionary.

• noun The lambkill, Kalmia angustifolia, an American shrub the leaves of which are reputed poisonous to animals. Also sheep-poison, calfkill, wicky.

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

• noun North American dwarf shrub resembling mountain laurel but having narrower leaves and small red flowers; poisonous to young stock