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]

WordNet (r) 3.0 (2006):

kalmia
    n 1: any plant of the genus Kalmia