lamb kill

from The Collaborative International Dictionary of English v.0.48

Kalmia \Kal"mi*a\, n. [NL. Named in honor of Peter Kalm, a
   Swedish botanist.] (Bot.)
   A genus of North American shrubs with poisonous evergreen
   foliage and corymbs of showy flowers. Called also {mountain
   laurel}, {ivy bush}, {lamb kill}, {calico bush}, etc.
   [1913 Webster]